28,013
28,013 is a composite number, odd.
28,013 (twenty-eight thousand thirteen) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 109 × 257. Written other ways, in hexadecimal, 0x6D6D.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 31,082
- Recamán's sequence
- a(34,405) = 28,013
- Square (n²)
- 784,728,169
- Cube (n³)
- 21,982,590,198,197
- Divisor count
- 4
- σ(n) — sum of divisors
- 28,380
- φ(n) — Euler's totient
- 27,648
- Sum of prime factors
- 366
Primality
Prime factorization: 109 × 257
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√28,013 = [167; (2, 1, 2, 3, 2, 1, 1, 2, 3, 2, 1, 2, 334)]
Period length 13 — the block in parentheses repeats forever.
Representations
- In words
- twenty-eight thousand thirteen
- Ordinal
- 28013th
- Binary
- 110110101101101
- Octal
- 66555
- Hexadecimal
- 0x6D6D
- Base64
- bW0=
- One's complement
- 37,522 (16-bit)
- Scientific notation
- 2.8013 × 10⁴
- As a duration
- 28,013 s = 7 hours, 46 minutes, 53 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵κηιγʹ
- Mayan (base 20)
- 𝋣·𝋪·𝋠·𝋭
- Chinese
- 二萬八千零一十三
- Chinese (financial)
- 貳萬捌仟零壹拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 28,013 = 8
- e — Euler's number (e)
- Digit 28,013 = 0
- φ — Golden ratio (φ)
- Digit 28,013 = 4
- √2 — Pythagoras's (√2)
- Digit 28,013 = 7
- ln 2 — Natural log of 2
- Digit 28,013 = 6
- γ — Euler-Mascheroni (γ)
- Digit 28,013 = 9
Also seen as
UTF-8 encoding: E6 B5 AD (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.109.109.
- Address
- 0.0.109.109
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.109.109
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 28013 first appears in π at position 5,739 of the decimal expansion (the 5,739ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.