29,890
29,890 is a composite number, even.
29,890 (twenty-nine thousand eight hundred ninety) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2 × 5 × 7² × 61. Its proper divisors sum to 33,722, more than the number itself, making it an abundant number. It is the 244th triangular number. Written other ways, in hexadecimal, 0x74C2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 28
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 9,892
- Recamán's sequence
- a(161,471) = 29,890
- Square (n²)
- 893,412,100
- Cube (n³)
- 26,704,087,669,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 63,612
- φ(n) — Euler's totient
- 10,080
- Sum of prime factors
- 82
Primality
Prime factorization: 2 × 5 × 7 2 × 61
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√29,890 = [172; (1, 7, 1, 6, 1, 1, 1, 2, 4, 1, 6, 4, 8, 5, 5, 22, 1, 6, 10, 38, 3, 8, 1, 1, …)]
Period length 50 — the block in parentheses repeats forever.
Representations
- In words
- twenty-nine thousand eight hundred ninety
- Ordinal
- 29890th
- Binary
- 111010011000010
- Octal
- 72302
- Hexadecimal
- 0x74C2
- Base64
- dMI=
- One's complement
- 35,645 (16-bit)
- Scientific notation
- 2.989 × 10⁴
- As a duration
- 29,890 s = 8 hours, 18 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵κθωϟʹ
- Mayan (base 20)
- 𝋣·𝋮·𝋮·𝋪
- Chinese
- 二萬九千八百九十
- Chinese (financial)
- 貳萬玖仟捌佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 29,890 = 9
- e — Euler's number (e)
- Digit 29,890 = 8
- φ — Golden ratio (φ)
- Digit 29,890 = 9
- √2 — Pythagoras's (√2)
- Digit 29,890 = 3
- ln 2 — Natural log of 2
- Digit 29,890 = 7
- γ — Euler-Mascheroni (γ)
- Digit 29,890 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 29890, here are decompositions:
- 11 + 29879 = 29890
- 17 + 29873 = 29890
- 23 + 29867 = 29890
- 53 + 29837 = 29890
- 71 + 29819 = 29890
- 101 + 29789 = 29890
- 131 + 29759 = 29890
- 137 + 29753 = 29890
Showing the first eight; more decompositions exist.
UTF-8 encoding: E7 93 82 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.116.194.
- Address
- 0.0.116.194
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.116.194
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 29890 first appears in π at position 298,910 of the decimal expansion (the 298,910ordinal-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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.