138,772
138,772 is a composite number, even.
138,772 (one hundred thirty-eight thousand seven hundred seventy-two) is an even 6-digit number. It is a composite number with 6 divisors, and factors as 2² × 34,693. Written other ways, in hexadecimal, 0x21E14.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 2,352
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 277,831
- Recamán's sequence
- a(491,283) = 138,772
- Square (n²)
- 19,257,667,984
- Cube (n³)
- 2,672,425,101,475,648
- Divisor count
- 6
- σ(n) — sum of divisors
- 242,858
- φ(n) — Euler's totient
- 69,384
- Sum of prime factors
- 34,697
Primality
Prime factorization: 2 2 × 34693
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,772 = [372; (1, 1, 11, 3, 14, 3, 1, 1, 20, 7, 1, 25, 1, 2, 1, 2, 1, 9, 2, 8, 1, 2, 1, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand seven hundred seventy-two
- Ordinal
- 138772nd
- Binary
- 100001111000010100
- Octal
- 417024
- Hexadecimal
- 0x21E14
- Base64
- Ah4U
- One's complement
- 4,294,828,523 (32-bit)
- Scientific notation
- 1.38772 × 10⁵
- As a duration
- 138,772 s = 1 day, 14 hours, 32 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρληψοβʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋲·𝋬
- Chinese
- 一十三萬八千七百七十二
- Chinese (financial)
- 壹拾參萬捌仟柒佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138772, here are decompositions:
- 41 + 138731 = 138772
- 89 + 138683 = 138772
- 131 + 138641 = 138772
- 173 + 138599 = 138772
- 191 + 138581 = 138772
- 311 + 138461 = 138772
- 383 + 138389 = 138772
- 401 + 138371 = 138772
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B8 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.20.
- Address
- 0.2.30.20
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.20
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 138,772 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 138772 first appears in π at position 883,695 of the decimal expansion (the 883,695ordinal-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.