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172,244

172,244 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

172,244 (one hundred seventy-two thousand two hundred forty-four) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 17² × 149. Written other ways, in hexadecimal, 0x2A0D4.

Cube-Free Deficient Number Odious Number Pernicious Number Recamán's Sequence

Interestingness

Properties

Parity
Even
Digit count
6
Digit sum
20
Digit product
448
Digital root
2
Palindrome
No
Bit width
18 bits
Reversed
442,271
Recamán's sequence
a(191,276) = 172,244
Square (n²)
29,667,995,536
Cube (n³)
5,110,134,223,102,784
Divisor count
18
σ(n) — sum of divisors
322,350
φ(n) — Euler's totient
80,512
Sum of prime factors
187

Primality

Prime factorization: 2 2 × 17 2 × 149

Nearest primes: 172,243 (−1) · 172,259 (+15)

Divisors & multiples

All divisors (18)
1 · 2 · 4 · 17 · 34 · 68 · 149 · 289 · 298 · 578 · 596 · 1156 · 2533 · 5066 · 10132 · 43061 · 86122 (half) · 172244
Aliquot sum (sum of proper divisors): 150,106
Factor pairs (a × b = 172,244)
1 × 172244
2 × 86122
4 × 43061
17 × 10132
34 × 5066
68 × 2533
149 × 1156
289 × 596
298 × 578
First multiples
172,244 · 344,488 (double) · 516,732 · 688,976 · 861,220 · 1,033,464 · 1,205,708 · 1,377,952 · 1,550,196 · 1,722,440

Sums & aliquot sequence

As a sum of two squares: 50² + 412² = 188² + 370² = 238² + 340²
As consecutive integers: 21,527 + 21,528 + … + 21,534 10,124 + 10,125 + … + 10,140 1,199 + 1,200 + … + 1,334 1,082 + 1,083 + … + 1,230
Aliquot sequence: 172,244 150,106 95,558 47,782 34,154 17,080 27,560 40,480 68,384 66,310 59,690 50,902 28,010 22,426 11,216 10,546 5,276 — unresolved within range

Continued fraction of √n

√172,244 = [415; (43, 1, 2, 5, 1, 1, 2, 5, 3, 51, 1, 1, 3, 2, 2, 3, 2, 2, 2, 3, 2, 2, 3, 1, …)]

Period length 36 — the block in parentheses repeats forever.

Representations

In words
one hundred seventy-two thousand two hundred forty-four
Ordinal
172244th
Binary
101010000011010100
Octal
520324
Hexadecimal
0x2A0D4
Base64
AqDU
One's complement
4,294,795,051 (32-bit)
Scientific notation
1.72244 × 10⁵
As a duration
172,244 s = 1 day, 23 hours, 50 minutes, 44 seconds
In other bases
ternary (3) 22202021102
quaternary (4) 222003110
quinary (5) 21002434
senary (6) 3405232
septenary (7) 1315112
nonary (9) 282242
undecimal (11) 108456
duodecimal (12) 83818
tridecimal (13) 60527
tetradecimal (14) 46ab2
pentadecimal (15) 3607e

As an angle

172,244° = 478 × 360° + 164°
164° ≈ 2.862 rad
Compass bearing: SSE (south-southeast)

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ροβσμδʹ
Chinese
一十七萬二千二百四十四
Chinese (financial)
壹拾柒萬貳仟貳佰肆拾肆
In other modern scripts
Eastern Arabic ١٧٢٢٤٤ Devanagari १७२२४४ Bengali ১৭২২৪৪ Tamil ௧௭௨௨௪௪ Thai ๑๗๒๒๔๔ Tibetan ༡༧༢༢༤༤ Khmer ១៧២២៤៤ Lao ໑໗໒໒໔໔ Burmese ၁၇၂၂၄၄

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 172244, here are decompositions:

  • 31 + 172213 = 172244
  • 73 + 172171 = 172244
  • 97 + 172147 = 172244
  • 151 + 172093 = 172244
  • 223 + 172021 = 172244
  • 307 + 171937 = 172244
  • 367 + 171877 = 172244
  • 421 + 171823 = 172244

Showing the first eight; more decompositions exist.

Unicode codepoint
𪃔
CJK Unified Ideograph-2A0D4
U+2A0D4
Other letter (Lo)

UTF-8 encoding: F0 AA 83 94 (4 bytes).

Hex color
#02A0D4
RGB(2, 160, 212)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.160.212.

Address
0.2.160.212
Class
reserved
IPv4-mapped IPv6
::ffff:0.2.160.212

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 172,244 and was likely granted around 1874.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Position in π

The digit sequence 172244 first appears in π at position 830,032 of the decimal expansion (the 830,032ordinal-suffix:nd 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.

Related reading

  • Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.