Number

572

572 is a composite number, even, a calendar year.

572 (five hundred seventy-two) is an even 3-digit number. It is a composite number with 12 divisors, and factors as 2² × 11 × 13. Its proper divisors sum to 604, more than the number itself, making it an abundant number. Written other ways, in Roman numerals it is DLXXII and in binary, 1000111100.

Abundant Number Arithmetic Number Cube-Free Gapful Number Odious Number Pernicious Number Recamán's Sequence Semiperfect Number Year

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584

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Historical context — 572 AD

Calendar year

Year 572 (DLXXII) was a leap year starting on Friday of the Julian calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Historical context — 572 BC

Calendar year

The year 572 BC was a year of the pre-Julian Roman calendar.

Excerpt from Wikipedia (en) ↗ · Licensed CC BY-SA 4.0 Read the full article on Wikipedia →

Year facts

Year type: Leap year
Divisible by 4 and not by 100; February has 29 days.
Days in year: 366
ISO weeks: 53
Long year: contains 53 ISO weeks.
Started on: Wednesday
January 1, 572
Ended on: Thursday
December 31, 572
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 570s
570–579
Century: 6th century
501–600
Millennium: 1st millennium
1–1000
Years ago: 1,454
1454 years before 2026.

In other calendars

Hebrew: 4332 / 4333 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Water zodiac:Dragon
Sexagenary cycle position 29 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1115 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 564 / 565 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 494 / 493 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 14
Digit product: 70
Digital root: 5
Palindrome: No
Bit width: 10 bits
Reversed: 275
Recamán's sequence: a(1,115) = 572
Square (n²): 327,184
Cube (n³): 187,149,248
Divisor count: 12
σ(n) — sum of divisors: 1,176
φ(n) — Euler's totient: 240
Sum of prime factors: 28

Primality

Prime factorization: 2 ² × 11 × 13

Nearest primes: 571 (−1) · 577 (+5)

Divisors & multiples

All divisors (12)

1 · 2 · 4 · 11 · 13 · 22 · 26 · 44 · 52 · 143 · 286 (half) · 572

Aliquot sum (sum of proper divisors): 604

Factor pairs (a × b = 572)

1 × 572

2 × 286

4 × 143

11 × 52

13 × 44

22 × 26

First multiples

572 · 1,144 (double) · 1,716 · 2,288 · 2,860 · 3,432 · 4,004 · 4,576 · 5,148 · 5,720

Sums & aliquot sequence

As consecutive integers: 68 + 69 + … + 75 47 + 48 + … + 57 38 + 39 + … + 50

Aliquot sequence: 572 → 604 → 460 → 548 → 418 → 302 → 154 → 134 → 70 → 74 → 40 → 50 → 43 → 1 → 0 — terminates at zero

Continued fraction of √n

√572 = [23; (1, 10, 1, 46)]

Period length 4 — the block in parentheses repeats forever.

Representations

In words: five hundred seventy-two
Ordinal: 572nd
Roman numeral: DLXXII
Binary: 1000111100
Octal: 1074
Hexadecimal: 0x23C
Base64: Ajw=
One's complement: 64,963 (16-bit)
Scientific notation: 5.72 × 10²
As a duration: 572 s = 9 minutes, 32 seconds

In other bases

ternary (3) 210012

quaternary (4) 20330

quinary (5) 4242

senary (6) 2352

septenary (7) 1445

nonary (9) 705

undecimal (11) 480

duodecimal (12) 3b8

tridecimal (13) 350

tetradecimal (14) 2cc

pentadecimal (15) 282

Palindromic in base 3, base 15

As an angle

572° = 1 × 360° + 212°

212° ≈ 3.7 rad

Compass bearing: SSW (south-southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian): φοβʹ
Mayan (base 20): 𝋡·𝋨·𝋬
Chinese: 五百七十二
Chinese (financial): 伍佰柒拾貳

In other modern scripts

Eastern Arabic ٥٧٢ Devanagari ५७२ Bengali ৫৭২ Tamil ௫௭௨ Thai ๕๗๒ Tibetan ༥༧༢ Khmer ៥៧២ Lao ໕໗໒ Burmese ၅၇၂

Digit at this position in famous constants

π — Pi (π): Digit 572 = 2
e — Euler's number (e): Digit 572 = 9
φ — Golden ratio (φ): Digit 572 = 0
√2 — Pythagoras's (√2): Digit 572 = 9
ln 2 — Natural log of 2: Digit 572 = 1
γ — Euler-Mascheroni (γ): Digit 572 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 572, here are decompositions:

3 + 569 = 572
31 + 541 = 572
73 + 499 = 572
109 + 463 = 572
139 + 433 = 572
151 + 421 = 572
163 + 409 = 572
193 + 379 = 572

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Small Letter C With Stroke

U+023C

Lowercase letter (Ll)

UTF-8 encoding: C8 BC (2 bytes).

Lookup U+023C on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00023C

RGB(0, 2, 60)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.2.60.

Address: 0.0.2.60
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.2.60

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Musical pitch

Heard as a frequency, 572 Hz is closest to:

Concert pitch (A4 = 440 Hz): D5 (587.3 Hz, -46¢ — about midway to C♯5)
Scientific pitch (C4 = 256 Hz): D5 (574.7 Hz, -8¢)
Baroque pitch (A4 = 415 Hz): D♯5 (586.9 Hz, -45¢ — about midway to D5)