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20,013

20,013 is a composite number, odd.

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.).
Arithmetic Number Deficient Number Evil Number Sphenic Number Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
6
Digit product
0
Digital root
6
Palindrome
No
Bit width
15 bits
Reversed
31,002
Square (n²)
400,520,169
Cube (n³)
8,015,610,142,197
Divisor count
8
σ(n) — sum of divisors
30,528
φ(n) — Euler's totient
11,424
Sum of prime factors
963

Primality

Prime factorization: 3 × 7 × 953

Nearest primes: 20,011 (−2) · 20,021 (+8)

Divisors & multiples

All divisors (8)
1 · 3 · 7 · 21 · 953 · 2859 · 6671 · 20013
Aliquot sum (sum of proper divisors): 10,515
Factor pairs (a × b = 20,013)
1 × 20013
3 × 6671
7 × 2859
21 × 953
First multiples
20,013 · 40,026 (double) · 60,039 · 80,052 · 100,065 · 120,078 · 140,091 · 160,104 · 180,117 · 200,130

Sums & aliquot sequence

As consecutive integers: 10,006 + 10,007 6,670 + 6,671 + 6,672 3,333 + 3,334 + 3,335 + 3,336 + 3,337 + 3,338 2,856 + 2,857 + … + 2,862
Aliquot sequence: 20,013 10,515 6,333 2,115 1,629 737 79 1 0 — terminates at zero

Representations

In words
twenty thousand thirteen
Ordinal
20013th
Binary
100111000101101
Octal
47055
Hexadecimal
0x4E2D
Base64
Ti0=
One's complement
45,522 (16-bit)
In other bases
ternary (3) 1000110020
quaternary (4) 10320231
quinary (5) 1120023
senary (6) 232353
septenary (7) 112230
nonary (9) 30406
undecimal (11) 14044
duodecimal (12) b6b9
tridecimal (13) 9156
tetradecimal (14) 7417
pentadecimal (15) 5de3

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓎆𓏺𓏺𓏺
Greek (Milesian)
͵κιγʹ
Mayan (base 20)
𝋢·𝋪·𝋠·𝋭
Chinese
二萬零一十三
Chinese (financial)
貳萬零壹拾參
In other modern scripts
Eastern Arabic ٢٠٠١٣ Devanagari २००१३ Bengali ২০০১৩ Tamil ௨௦௦௧௩ Thai ๒๐๐๑๓ Tibetan ༢༠༠༡༣ Khmer ២០០១៣ Lao ໒໐໐໑໓ Burmese ၂၀၀၁၃

Digit at this position in famous constants

π — Pi (π)
Digit 20,013 = 9
e — Euler's number (e)
Digit 20,013 = 8
φ — Golden ratio (φ)
Digit 20,013 = 5
√2 — Pythagoras's (√2)
Digit 20,013 = 4
ln 2 — Natural log of 2
Digit 20,013 = 6
γ — Euler-Mascheroni (γ)
Digit 20,013 = 0

Also seen as

Unicode codepoint
CJK Unified Ideograph-4E2D
U+4E2D
Other letter (Lo)

UTF-8 encoding: E4 B8 AD (3 bytes).

Hex color
#004E2D
RGB(0, 78, 45)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.45.

Address
0.0.78.45
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.78.45

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

Position in π

The digit sequence 20013 first appears in π at position 157,718 of the decimal expansion (the 157,718ordinal-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.