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23,980

23,980 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.).
Abundant Number Arithmetic Number Gapful Number Harshad / Niven Odious Number Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
22
Digit product
0
Digital root
4
Palindrome
No
Bit width
15 bits
Reversed
8,932
Recamán's sequence
a(38,355) = 23,980
Square (n²)
575,040,400
Cube (n³)
13,789,468,792,000
Divisor count
24
σ(n) — sum of divisors
55,440
φ(n) — Euler's totient
8,640
Sum of prime factors
129

Primality

Prime factorization: 2 2 × 5 × 11 × 109

Nearest primes: 23,977 (−3) · 23,981 (+1)

Divisors & multiples

All divisors (24)
1 · 2 · 4 · 5 · 10 · 11 · 20 · 22 · 44 · 55 · 109 · 110 · 218 · 220 · 436 · 545 · 1090 · 1199 · 2180 · 2398 · 4796 · 5995 · 11990 (half) · 23980
Aliquot sum (sum of proper divisors): 31,460
Factor pairs (a × b = 23,980)
1 × 23980
2 × 11990
4 × 5995
5 × 4796
10 × 2398
11 × 2180
20 × 1199
22 × 1090
44 × 545
55 × 436
109 × 220
110 × 218
First multiples
23,980 · 47,960 (double) · 71,940 · 95,920 · 119,900 · 143,880 · 167,860 · 191,840 · 215,820 · 239,800

Sums & aliquot sequence

As consecutive integers: 4,794 + 4,795 + 4,796 + 4,797 + 4,798 2,994 + 2,995 + … + 3,001 2,175 + 2,176 + … + 2,185 580 + 581 + … + 619
Aliquot sequence: 23,980 31,460 46,744 40,916 32,416 31,466 15,736 18,104 17,416 20,024 17,536 17,654 15,274 10,934 9,802 6,668 5,008 — unresolved within range

Representations

In words
twenty-three thousand nine hundred eighty
Ordinal
23980th
Binary
101110110101100
Octal
56654
Hexadecimal
0x5DAC
Base64
Xaw=
One's complement
41,555 (16-bit)
In other bases
ternary (3) 1012220011
quaternary (4) 11312230
quinary (5) 1231410
senary (6) 303004
septenary (7) 126625
nonary (9) 35804
undecimal (11) 17020
duodecimal (12) 11a64
tridecimal (13) abb8
tetradecimal (14) 8a4c
pentadecimal (15) 718a

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian)
͵κγϡπʹ
Mayan (base 20)
𝋢·𝋳·𝋳·𝋠
Chinese
二萬三千九百八十
Chinese (financial)
貳萬參仟玖佰捌拾
In other modern scripts
Eastern Arabic ٢٣٩٨٠ Devanagari २३९८० Bengali ২৩৯৮০ Tamil ௨௩௯௮௦ Thai ๒๓๙๘๐ Tibetan ༢༣༩༨༠ Khmer ២៣៩៨០ Lao ໒໓໙໘໐ Burmese ၂၃၉၈၀

Digit at this position in famous constants

π — Pi (π)
Digit 23,980 = 0
e — Euler's number (e)
Digit 23,980 = 4
φ — Golden ratio (φ)
Digit 23,980 = 6
√2 — Pythagoras's (√2)
Digit 23,980 = 7
ln 2 — Natural log of 2
Digit 23,980 = 3
γ — Euler-Mascheroni (γ)
Digit 23,980 = 0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 23980, here are decompositions:

  • 3 + 23977 = 23980
  • 23 + 23957 = 23980
  • 71 + 23909 = 23980
  • 101 + 23879 = 23980
  • 107 + 23873 = 23980
  • 149 + 23831 = 23980
  • 167 + 23813 = 23980
  • 179 + 23801 = 23980

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-5Dac
U+5DAC
Other letter (Lo)

UTF-8 encoding: E5 B6 AC (3 bytes).

Hex color
#005DAC
RGB(0, 93, 172)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.93.172.

Address
0.0.93.172
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.93.172

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

Possible US bank routing number

This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.

Routing number
000023980
Federal Reserve
United States Government

Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.

Position in π

The digit sequence 23980 first appears in π at position 21,792 of the decimal expansion (the 21,792ordinal-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.