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16,401

16,401 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 Gapful Number Odious Number Pernicious Number Recamán's Sequence Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
12
Digit product
0
Digital root
3
Palindrome
No
Bit width
15 bits
Reversed
10,461
Recamán's sequence
a(17,910) = 16,401
Square (n²)
268,992,801
Cube (n³)
4,411,750,929,201
Divisor count
16
σ(n) — sum of divisors
27,648
φ(n) — Euler's totient
8,400
Sum of prime factors
92

Primality

Prime factorization: 3 × 7 × 11 × 71

Nearest primes: 16,381 (−20) · 16,411 (+10)

Divisors & multiples

All divisors (16)
1 · 3 · 7 · 11 · 21 · 33 · 71 · 77 · 213 · 231 · 497 · 781 · 1491 · 2343 · 5467 · 16401
Aliquot sum (sum of proper divisors): 11,247
Factor pairs (a × b = 16,401)
1 × 16401
3 × 5467
7 × 2343
11 × 1491
21 × 781
33 × 497
71 × 231
77 × 213
First multiples
16,401 · 32,802 (double) · 49,203 · 65,604 · 82,005 · 98,406 · 114,807 · 131,208 · 147,609 · 164,010

Sums & aliquot sequence

As consecutive integers: 8,200 + 8,201 5,466 + 5,467 + 5,468 2,731 + 2,732 + 2,733 + 2,734 + 2,735 + 2,736 2,340 + 2,341 + … + 2,346
Aliquot sequence: 16,401 11,247 4,497 1,503 681 231 153 81 40 50 43 1 0 — terminates at zero

Representations

In words
sixteen thousand four hundred one
Ordinal
16401st
Binary
100000000010001
Octal
40021
Hexadecimal
0x4011
Base64
QBE=
One's complement
49,134 (16-bit)
In other bases
ternary (3) 211111110
quaternary (4) 10000101
quinary (5) 1011101
senary (6) 203533
septenary (7) 65550
nonary (9) 24443
undecimal (11) 11360
duodecimal (12) 95a9
tridecimal (13) 7608
tetradecimal (14) 5d97
pentadecimal (15) 4cd6

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓏺
Greek (Milesian)
͵ιϛυαʹ
Mayan (base 20)
𝋢·𝋡·𝋠·𝋡
Chinese
一萬六千四百零一
Chinese (financial)
壹萬陸仟肆佰零壹
In other modern scripts
Eastern Arabic ١٦٤٠١ Devanagari १६४०१ Bengali ১৬৪০১ Tamil ௧௬௪௦௧ Thai ๑๖๔๐๑ Tibetan ༡༦༤༠༡ Khmer ១៦៤០១ Lao ໑໖໔໐໑ Burmese ၁၆၄၀၁

Digit at this position in famous constants

π — Pi (π)
Digit 16,401 = 2
e — Euler's number (e)
Digit 16,401 = 5
φ — Golden ratio (φ)
Digit 16,401 = 7
√2 — Pythagoras's (√2)
Digit 16,401 = 2
ln 2 — Natural log of 2
Digit 16,401 = 1
γ — Euler-Mascheroni (γ)
Digit 16,401 = 5

Also seen as

Unicode codepoint
CJK Unified Ideograph-4011
U+4011
Other letter (Lo)

UTF-8 encoding: E4 80 91 (3 bytes).

Hex color
#004011
RGB(0, 64, 17)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.17.

Address
0.0.64.17
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.64.17

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

Position in π

The digit sequence 16401 first appears in π at position 58,906 of the decimal expansion (the 58,906ordinal-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.