Number

72,089

72,089 is a prime, odd.

72,089 (seventy-two thousand eighty-nine) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x11999.

Arithmetic Number Chen Prime Cube-Free Deficient Number Evil Number Prime Pythagorean Prime Recamán's Sequence Squarefree Twin Prime

Interestingness

★ ★ ★ ★ ★

8 notable facts · grade A

72,077 72,078 72,079 72,080 72,081 72,082 72,083 72,084 72,085 72,086 72,087 72,088 72,089 72,090 72,091 72,092 72,093 72,094 72,095 72,096 72,097 72,098 72,099 72,100 72,101

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Properties

Parity: Odd
Digit count: 5
Digit sum: 26
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 17 bits
Reversed: 98,027
Recamán's sequence: a(127,421) = 72,089
Square (n²): 5,196,823,921
Cube (n³): 374,633,839,640,969
Divisor count: 2
σ(n) — sum of divisors: 72,090
φ(n) — Euler's totient: 72,088

Primality

72,089 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 72089

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 72,089)

1 × 72089

First multiples

72,089 · 144,178 (double) · 216,267 · 288,356 · 360,445 · 432,534 · 504,623 · 576,712 · 648,801 · 720,890

Sums & aliquot sequence

As a sum of two squares: 67² + 260²

As consecutive integers: 36,044 + 36,045

Continued fraction of √n

√72,089 = [268; (2, 40, 1, 4, 5, 2, 1, 66, 2, 3, 2, 4, 1, 2, 1, 1, 1, 5, 2, 1, 1, 32, 1, 30, …)]

Representations

In words: seventy-two thousand eighty-nine
Ordinal: 72089th
Binary: 10001100110011001
Octal: 214631
Hexadecimal: 0x11999
Base64: ARmZ
One's complement: 4,294,895,206 (32-bit)
Scientific notation: 7.2089 × 10⁴
As a duration: 72,089 s = 20 hours, 1 minute, 29 seconds

In other bases

ternary (3) 10122212222

quaternary (4) 101212121

quinary (5) 4301324

senary (6) 1313425

septenary (7) 420113

nonary (9) 118788

undecimal (11) 4a186

duodecimal (12) 35875

tridecimal (13) 26a74

tetradecimal (14) 1c3b3

pentadecimal (15) 1655e

As an angle

72,089° = 200 × 360° + 89°

89° ≈ 1.553 rad

Compass bearing: E (east)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋 𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵οβπθʹ
Mayan (base 20): 𝋩·𝋠·𝋤·𝋩
Chinese: 七萬二千零八十九
Chinese (financial): 柒萬貳仟零捌拾玖

In other modern scripts

Eastern Arabic ٧٢٠٨٩ Devanagari ७२०८९ Bengali ৭২০৮৯ Tamil ௭௨௦௮௯ Thai ๗๒๐๘๙ Tibetan ༧༢༠༨༩ Khmer ៧២០៨៩ Lao ໗໒໐໘໙ Burmese ၇၂၀၈၉

Digit at this position in famous constants

π — Pi (π): Digit 72,089 = 3
e — Euler's number (e): Digit 72,089 = 4
φ — Golden ratio (φ): Digit 72,089 = 0
√2 — Pythagoras's (√2): Digit 72,089 = 4
ln 2 — Natural log of 2: Digit 72,089 = 6
γ — Euler-Mascheroni (γ): Digit 72,089 = 9

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 72,077 (gap of 12)
Next prime: 72,091 (gap of 2)

Pair status: twin with 72091.

Hex color

#011999

RGB(1, 25, 153)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.25.153.

Address: 0.1.25.153
Class: reserved
IPv4-mapped IPv6: ::ffff:0.1.25.153

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

Position in π

The digit sequence 72089 first appears in π at position 44,654 of the decimal expansion (the 44,654ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 72089 on Pi Search ↗