137,870
137,870 is a composite number, even.
137,870 (one hundred thirty-seven thousand eight hundred seventy) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 17 × 811. Written other ways, in hexadecimal, 0x21A8E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 78,731
- Recamán's sequence
- a(493,087) = 137,870
- Square (n²)
- 19,008,136,900
- Cube (n³)
- 2,620,651,834,403,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 263,088
- φ(n) — Euler's totient
- 51,840
- Sum of prime factors
- 835
Primality
Prime factorization: 2 × 5 × 17 × 811
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√137,870 = [371; (3, 4, 7, 8, 4, 1, 6, 4, 1, 38, 3, 1, 1, 2, 1, 1, 1, 11, 1, 20, 1, 11, 1, 1, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-seven thousand eight hundred seventy
- Ordinal
- 137870th
- Binary
- 100001101010001110
- Octal
- 415216
- Hexadecimal
- 0x21A8E
- Base64
- AhqO
- One's complement
- 4,294,829,425 (32-bit)
- Scientific notation
- 1.3787 × 10⁵
- As a duration
- 137,870 s = 1 day, 14 hours, 17 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλζωοʹ
- Mayan (base 20)
- 𝋱·𝋤·𝋭·𝋪
- Chinese
- 一十三萬七千八百七十
- Chinese (financial)
- 壹拾參萬柒仟捌佰柒拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 137870, here are decompositions:
- 3 + 137867 = 137870
- 43 + 137827 = 137870
- 67 + 137803 = 137870
- 79 + 137791 = 137870
- 127 + 137743 = 137870
- 157 + 137713 = 137870
- 163 + 137707 = 137870
- 211 + 137659 = 137870
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AA 8E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.26.142.
- Address
- 0.2.26.142
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.26.142
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 137,870 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 137870 first appears in π at position 793,682 of the decimal expansion (the 793,682ordinal-suffix:nd 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.