28,442
28,442 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 512
- Digital root
- 2
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,482
- Recamán's sequence
- a(80,256) = 28,442
- Square (n²)
- 808,947,364
- Cube (n³)
- 23,008,080,926,888
- Divisor count
- 4
- σ(n) — sum of divisors
- 42,666
- φ(n) — Euler's totient
- 14,220
- Sum of prime factors
- 14,223
Primality
Prime factorization: 2 × 14221
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty-eight thousand four hundred forty-two
- Ordinal
- 28442nd
- Binary
- 110111100011010
- Octal
- 67432
- Hexadecimal
- 0x6F1A
- Base64
- bxo=
- One's complement
- 37,093 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κηυμβʹ
- Mayan (base 20)
- 𝋣·𝋫·𝋢·𝋢
- Chinese
- 二萬八千四百四十二
- Chinese (financial)
- 貳萬捌仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 28,442 = 8
- e — Euler's number (e)
- Digit 28,442 = 0
- φ — Golden ratio (φ)
- Digit 28,442 = 5
- √2 — Pythagoras's (√2)
- Digit 28,442 = 1
- ln 2 — Natural log of 2
- Digit 28,442 = 7
- γ — Euler-Mascheroni (γ)
- Digit 28,442 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 28442, here are decompositions:
- 3 + 28439 = 28442
- 13 + 28429 = 28442
- 31 + 28411 = 28442
- 163 + 28279 = 28442
- 223 + 28219 = 28442
- 241 + 28201 = 28442
- 331 + 28111 = 28442
- 373 + 28069 = 28442
Showing the first eight; more decompositions exist.
UTF-8 encoding: E6 BC 9A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.111.26.
- Address
- 0.0.111.26
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.111.26
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 28442 first appears in π at position 114,547 of the decimal expansion (the 114,547ordinal-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.