21,348
21,348 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 192
- Digital root
- 9
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 84,312
- Recamán's sequence
- a(41,143) = 21,348
- Square (n²)
- 455,737,104
- Cube (n³)
- 9,729,075,696,192
- Divisor count
- 18
- σ(n) — sum of divisors
- 54,054
- φ(n) — Euler's totient
- 7,104
- Sum of prime factors
- 603
Primality
Prime factorization: 2 2 × 3 2 × 593
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty-one thousand three hundred forty-eight
- Ordinal
- 21348th
- Binary
- 101001101100100
- Octal
- 51544
- Hexadecimal
- 0x5364
- Base64
- U2Q=
- One's complement
- 44,187 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵κατμηʹ
- Mayan (base 20)
- 𝋢·𝋭·𝋧·𝋨
- Chinese
- 二萬一千三百四十八
- Chinese (financial)
- 貳萬壹仟參佰肆拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,348 = 8
- e — Euler's number (e)
- Digit 21,348 = 8
- φ — Golden ratio (φ)
- Digit 21,348 = 0
- √2 — Pythagoras's (√2)
- Digit 21,348 = 2
- ln 2 — Natural log of 2
- Digit 21,348 = 7
- γ — Euler-Mascheroni (γ)
- Digit 21,348 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 21348, here are decompositions:
- 7 + 21341 = 21348
- 29 + 21319 = 21348
- 31 + 21317 = 21348
- 71 + 21277 = 21348
- 79 + 21269 = 21348
- 101 + 21247 = 21348
- 127 + 21221 = 21348
- 137 + 21211 = 21348
Showing the first eight; more decompositions exist.
UTF-8 encoding: E5 8D A4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.100.
- Address
- 0.0.83.100
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.83.100
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 21348 first appears in π at position 69,616 of the decimal expansion (the 69,616ordinal-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.