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16,240

16,240 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 Odious Number Practical Number Recamán's Sequence Self Number Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
13
Digit product
0
Digital root
4
Palindrome
No
Bit width
14 bits
Reversed
4,261
Recamán's sequence
a(18,232) = 16,240
Square (n²)
263,737,600
Cube (n³)
4,283,098,624,000
Divisor count
40
σ(n) — sum of divisors
44,640
φ(n) — Euler's totient
5,376
Sum of prime factors
49

Primality

Prime factorization: 2 4 × 5 × 7 × 29

Nearest primes: 16,231 (−9) · 16,249 (+9)

Divisors & multiples

All divisors (40)
1 · 2 · 4 · 5 · 7 · 8 · 10 · 14 · 16 · 20 · 28 · 29 · 35 · 40 · 56 · 58 · 70 · 80 · 112 · 116 · 140 · 145 · 203 · 232 · 280 · 290 · 406 · 464 · 560 · 580 · 812 · 1015 · 1160 · 1624 · 2030 · 2320 · 3248 · 4060 · 8120 (half) · 16240
Aliquot sum (sum of proper divisors): 28,400
Factor pairs (a × b = 16,240)
1 × 16240
2 × 8120
4 × 4060
5 × 3248
7 × 2320
8 × 2030
10 × 1624
14 × 1160
16 × 1015
20 × 812
28 × 580
29 × 560
35 × 464
40 × 406
56 × 290
58 × 280
70 × 232
80 × 203
112 × 145
116 × 140
First multiples
16,240 · 32,480 (double) · 48,720 · 64,960 · 81,200 · 97,440 · 113,680 · 129,920 · 146,160 · 162,400

Sums & aliquot sequence

As consecutive integers: 3,246 + 3,247 + 3,248 + 3,249 + 3,250 2,317 + 2,318 + … + 2,323 546 + 547 + … + 574 492 + 493 + … + 523
Aliquot sequence: 16,240 28,400 40,792 35,708 28,132 24,984 42,876 68,564 53,824 56,793 25,863 9,705 5,847 1,953 1,375 497 79 — unresolved within range

Representations

In words
sixteen thousand two hundred forty
Ordinal
16240th
Binary
11111101110000
Octal
37560
Hexadecimal
0x3F70
Base64
P3A=
One's complement
49,295 (16-bit)
In other bases
ternary (3) 211021111
quaternary (4) 3331300
quinary (5) 1004430
senary (6) 203104
septenary (7) 65230
nonary (9) 24244
undecimal (11) 11224
duodecimal (12) 9494
tridecimal (13) 7513
tetradecimal (14) 5cc0
pentadecimal (15) 4c2a

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆
Greek (Milesian)
͵ιϛσμʹ
Mayan (base 20)
𝋢·𝋠·𝋬·𝋠
Chinese
一萬六千二百四十
Chinese (financial)
壹萬陸仟貳佰肆拾
In other modern scripts
Eastern Arabic ١٦٢٤٠ Devanagari १६२४० Bengali ১৬২৪০ Tamil ௧௬௨௪௦ Thai ๑๖๒๔๐ Tibetan ༡༦༢༤༠ Khmer ១៦២៤០ Lao ໑໖໒໔໐ Burmese ၁၆၂၄၀

Digit at this position in famous constants

π — Pi (π)
Digit 16,240 = 1
e — Euler's number (e)
Digit 16,240 = 5
φ — Golden ratio (φ)
Digit 16,240 = 9
√2 — Pythagoras's (√2)
Digit 16,240 = 0
ln 2 — Natural log of 2
Digit 16,240 = 6
γ — Euler-Mascheroni (γ)
Digit 16,240 = 3

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16240, here are decompositions:

  • 11 + 16229 = 16240
  • 17 + 16223 = 16240
  • 23 + 16217 = 16240
  • 47 + 16193 = 16240
  • 53 + 16187 = 16240
  • 101 + 16139 = 16240
  • 113 + 16127 = 16240
  • 137 + 16103 = 16240

Showing the first eight; more decompositions exist.

Unicode codepoint
CJK Unified Ideograph-3F70
U+3F70
Other letter (Lo)

UTF-8 encoding: E3 BD B0 (3 bytes).

Hex color
#003F70
RGB(0, 63, 112)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.63.112.

Address
0.0.63.112
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.63.112

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

Position in π

The digit sequence 16240 first appears in π at position 106,766 of the decimal expansion (the 106,766ordinal-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.