20,401
20,401 is a composite number, odd.
20,401 (twenty thousand four hundred one) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 23 × 887. Written other ways, in hexadecimal, 0x4FB1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 7
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 10,402
- Recamán's sequence
- a(86,414) = 20,401
- Square (n²)
- 416,200,801
- Cube (n³)
- 8,490,912,541,201
- Divisor count
- 4
- σ(n) — sum of divisors
- 21,312
- φ(n) — Euler's totient
- 19,492
- Sum of prime factors
- 910
Primality
Prime factorization: 23 × 887
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√20,401 = [142; (1, 4, 1, 21, 7, 10, 2, 3, 1, 1, 4, 1, 4, 1, 3, 1, 1, 3, 3, 1, 56, 2, 1, 2, …)]
Representations
- In words
- twenty thousand four hundred one
- Ordinal
- 20401st
- Binary
- 100111110110001
- Octal
- 47661
- Hexadecimal
- 0x4FB1
- Base64
- T7E=
- One's complement
- 45,134 (16-bit)
- Scientific notation
- 2.0401 × 10⁴
- As a duration
- 20,401 s = 5 hours, 40 minutes, 1 second
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓍢𓍢𓍢𓏺
- Greek (Milesian)
- ͵κυαʹ
- Mayan (base 20)
- 𝋢·𝋫·𝋠·𝋡
- Chinese
- 二萬零四百零一
- Chinese (financial)
- 貳萬零肆佰零壹
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,401 = 9
- e — Euler's number (e)
- Digit 20,401 = 1
- φ — Golden ratio (φ)
- Digit 20,401 = 5
- √2 — Pythagoras's (√2)
- Digit 20,401 = 3
- ln 2 — Natural log of 2
- Digit 20,401 = 9
- γ — Euler-Mascheroni (γ)
- Digit 20,401 = 6
Also seen as
UTF-8 encoding: E4 BE B1 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.79.177.
- Address
- 0.0.79.177
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.79.177
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20401 first appears in π at position 238,016 of the decimal expansion (the 238,016ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.