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23,940

23,940 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 Gapful Number Harshad / Niven Odious Number Pernicious Number Practical Number Recamán's Sequence Weird Number

Properties

Parity
Even
Digit count
5
Digit sum
18
Digit product
0
Digital root
9
Palindrome
No
Bit width
15 bits
Reversed
4,932
Recamán's sequence
a(38,435) = 23,940
Square (n²)
573,123,600
Cube (n³)
13,720,578,984,000
Divisor count
72
σ(n) — sum of divisors
87,360
φ(n) — Euler's totient
5,184
Sum of prime factors
41

Primality

Prime factorization: 2 2 × 3 2 × 5 × 7 × 19

Nearest primes: 23,929 (−11) · 23,957 (+17)

Divisors & multiples

All divisors (72)
1 · 2 · 3 · 4 · 5 · 6 · 7 · 9 · 10 · 12 · 14 · 15 · 18 · 19 · 20 · 21 · 28 · 30 · 35 · 36 · 38 · 42 · 45 · 57 · 60 · 63 · 70 · 76 · 84 · 90 · 95 · 105 · 114 · 126 · 133 · 140 · 171 · 180 · 190 · 210 · 228 · 252 · 266 · 285 · 315 · 342 · 380 · 399 · 420 · 532 · 570 · 630 · 665 · 684 · 798 · 855 · 1140 · 1197 · 1260 · 1330 · 1596 · 1710 · 1995 · 2394 · 2660 · 3420 · 3990 · 4788 · 5985 · 7980 · 11970 (half) · 23940
Aliquot sum (sum of proper divisors): 63,420
Factor pairs (a × b = 23,940)
1 × 23940
2 × 11970
3 × 7980
4 × 5985
5 × 4788
6 × 3990
7 × 3420
9 × 2660
10 × 2394
12 × 1995
14 × 1710
15 × 1596
18 × 1330
19 × 1260
20 × 1197
21 × 1140
28 × 855
30 × 798
35 × 684
36 × 665
38 × 630
42 × 570
45 × 532
57 × 420
60 × 399
63 × 380
70 × 342
76 × 315
84 × 285
90 × 266
95 × 252
105 × 228
114 × 210
126 × 190
133 × 180
140 × 171
First multiples
23,940 · 47,880 (double) · 71,820 · 95,760 · 119,700 · 143,640 · 167,580 · 191,520 · 215,460 · 239,400

Sums & aliquot sequence

As consecutive integers: 7,979 + 7,980 + 7,981 4,786 + 4,787 + 4,788 + 4,789 + 4,790 3,417 + 3,418 + … + 3,423 2,989 + 2,990 + … + 2,996
Aliquot sequence: 23,940 63,420 140,868 307,580 492,100 827,260 1,269,380 1,777,468 2,254,532 2,320,444 2,403,716 2,403,772 2,420,236 2,926,644 4,877,964 10,308,116 11,894,764 — unresolved within range

Representations

In words
twenty-three thousand nine hundred forty
Ordinal
23940th
Binary
101110110000100
Octal
56604
Hexadecimal
0x5D84
Base64
XYQ=
One's complement
41,595 (16-bit)
In other bases
ternary (3) 1012211200
quaternary (4) 11312010
quinary (5) 1231230
senary (6) 302500
septenary (7) 126540
nonary (9) 35750
undecimal (11) 16a94
duodecimal (12) 11a30
tridecimal (13) ab87
tetradecimal (14) 8a20
pentadecimal (15) 7160

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 ·
Egyptian hieroglyphic
𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian)
͵κγϡμʹ
Mayan (base 20)
𝋢·𝋳·𝋱·𝋠
Chinese
二萬三千九百四十
Chinese (financial)
貳萬參仟玖佰肆拾
In other modern scripts
Eastern Arabic ٢٣٩٤٠ Devanagari २३९४० Bengali ২৩৯৪০ Tamil ௨௩௯௪௦ Thai ๒๓๙๔๐ Tibetan ༢༣༩༤༠ Khmer ២៣៩៤០ Lao ໒໓໙໔໐ Burmese ၂၃၉၄၀

Digit at this position in famous constants

π — Pi (π)
Digit 23,940 = 6
e — Euler's number (e)
Digit 23,940 = 9
φ — Golden ratio (φ)
Digit 23,940 = 2
√2 — Pythagoras's (√2)
Digit 23,940 = 9
ln 2 — Natural log of 2
Digit 23,940 = 7
γ — Euler-Mascheroni (γ)
Digit 23,940 = 2

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 23940, here are decompositions:

  • 11 + 23929 = 23940
  • 23 + 23917 = 23940
  • 29 + 23911 = 23940
  • 31 + 23909 = 23940
  • 41 + 23899 = 23940
  • 47 + 23893 = 23940
  • 53 + 23887 = 23940
  • 61 + 23879 = 23940

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-5D84
U+5D84
Other letter (Lo)

UTF-8 encoding: E5 B6 84 (3 bytes).

Hex color
#005D84
RGB(0, 93, 132)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.93.132.

Address
0.0.93.132
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.93.132

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

Position in π

The digit sequence 23940 first appears in π at position 208,686 of the decimal expansion (the 208,686ordinal-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.