Number
82,021
82,021 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 12,028
- Recamán's sequence
- a(23,761) = 82,021
- Square (n²)
- 6,727,444,441
- Cube (n³)
- 551,791,720,495,261
- Divisor count
- 2
- σ(n) — sum of divisors
- 82,022
- φ(n) — Euler's totient
- 82,020
Primality
82,021 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
82,021
·
164,042
(double)
·
246,063
·
328,084
·
410,105
·
492,126
·
574,147
·
656,168
·
738,189
·
820,210
Sums & aliquot sequence
As a sum of two squares:
15² + 286²
As consecutive integers:
41,010 + 41,011
Representations
- In words
- eighty-two thousand twenty-one
- Ordinal
- 82021st
- Binary
- 10100000001100101
- Octal
- 240145
- Hexadecimal
- 0x14065
- Base64
- AUBl
- One's complement
- 4,294,885,274 (32-bit)
In other bases
ternary (3)
11011111211
quaternary (4)
110001211
quinary (5)
10111041
senary (6)
1431421
septenary (7)
461062
nonary (9)
134454
undecimal (11)
56695
duodecimal (12)
3b571
tridecimal (13)
2b444
tetradecimal (14)
21c69
pentadecimal (15)
19481
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓏺
- Greek (Milesian)
- ͵πβκαʹ
- Mayan (base 20)
- 𝋪·𝋥·𝋡·𝋡
- Chinese
- 八萬二千零二十一
- Chinese (financial)
- 捌萬貳仟零貳拾壹
In other modern scripts
Eastern Arabic
٨٢٠٢١
Devanagari
८२०२१
Bengali
৮২০২১
Tamil
௮௨௦௨௧
Thai
๘๒๐๒๑
Tibetan
༨༢༠༢༡
Khmer
៨២០២១
Lao
໘໒໐໒໑
Burmese
၈၂၀၂၁
Digit at this position in famous constants
- π — Pi (π)
- Digit 82,021 = 4
- e — Euler's number (e)
- Digit 82,021 = 7
- φ — Golden ratio (φ)
- Digit 82,021 = 8
- √2 — Pythagoras's (√2)
- Digit 82,021 = 9
- ln 2 — Natural log of 2
- Digit 82,021 = 4
- γ — Euler-Mascheroni (γ)
- Digit 82,021 = 2
Also seen as
Unicode codepoint
Egyptian Hieroglyph-14065
U+14065
Other letter (Lo)
UTF-8 encoding: F0 94 81 A5 (4 bytes).
Hex color
#014065
RGB(1, 64, 101)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.1.64.101.
- Address
- 0.1.64.101
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.64.101
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 82021 first appears in π at position 215,517 of the decimal expansion (the 215,517ordinal-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.