137,990
137,990 is a composite number, even.
137,990 (one hundred thirty-seven thousand nine hundred ninety) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 13,799. Written other ways, in hexadecimal, 0x21B06.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 99,731
- Recamán's sequence
- a(492,847) = 137,990
- Square (n²)
- 19,041,240,100
- Cube (n³)
- 2,627,500,721,399,000
- Divisor count
- 8
- σ(n) — sum of divisors
- 248,400
- φ(n) — Euler's totient
- 55,192
- Sum of prime factors
- 13,806
Primality
Prime factorization: 2 × 5 × 13799
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√137,990 = [371; (2, 7, 1, 5, 1, 1, 2, 1, 2, 2, 1, 1, 3, 1, 7, 1, 23, 12, 1, 1, 4, 2, 6, 1, …)]
Representations
- In words
- one hundred thirty-seven thousand nine hundred ninety
- Ordinal
- 137990th
- Binary
- 100001101100000110
- Octal
- 415406
- Hexadecimal
- 0x21B06
- Base64
- AhsG
- One's complement
- 4,294,829,305 (32-bit)
- Scientific notation
- 1.3799 × 10⁵
- As a duration
- 137,990 s = 1 day, 14 hours, 19 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλζϡϟʹ
- Mayan (base 20)
- 𝋱·𝋤·𝋳·𝋪
- Chinese
- 一十三萬七千九百九十
- Chinese (financial)
- 壹拾參萬柒仟玖佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 137990, here are decompositions:
- 7 + 137983 = 137990
- 43 + 137947 = 137990
- 79 + 137911 = 137990
- 163 + 137827 = 137990
- 199 + 137791 = 137990
- 277 + 137713 = 137990
- 283 + 137707 = 137990
- 331 + 137659 = 137990
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AC 86 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.6.
- Address
- 0.2.27.6
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.6
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 137,990 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 137990 first appears in π at position 769,987 of the decimal expansion (the 769,987ordinal-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.