138,708
138,708 is a composite number, even.
138,708 (one hundred thirty-eight thousand seven hundred eight) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 3² × 3,853. Its proper divisors sum to 212,006, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21DD4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 807,831
- Recamán's sequence
- a(491,411) = 138,708
- Square (n²)
- 19,239,909,264
- Cube (n³)
- 2,668,729,334,190,912
- Divisor count
- 18
- σ(n) — sum of divisors
- 350,714
- φ(n) — Euler's totient
- 46,224
- Sum of prime factors
- 3,863
Primality
Prime factorization: 2 2 × 3 2 × 3853
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,708 = [372; (2, 3, 2, 1, 3, 1, 1, 6, 2, 1, 26, 1, 9, 1, 1, 8, 1, 2, 20, 2, 1, 8, 1, 1, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand seven hundred eight
- Ordinal
- 138708th
- Binary
- 100001110111010100
- Octal
- 416724
- Hexadecimal
- 0x21DD4
- Base64
- Ah3U
- One's complement
- 4,294,828,587 (32-bit)
- Scientific notation
- 1.38708 × 10⁵
- As a duration
- 138,708 s = 1 day, 14 hours, 31 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληψηʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋯·𝋨
- Chinese
- 一十三萬八千七百零八
- Chinese (financial)
- 壹拾參萬捌仟柒佰零捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138708, here are decompositions:
- 29 + 138679 = 138708
- 47 + 138661 = 138708
- 61 + 138647 = 138708
- 67 + 138641 = 138708
- 71 + 138637 = 138708
- 79 + 138629 = 138708
- 109 + 138599 = 138708
- 127 + 138581 = 138708
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B7 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.212.
- Address
- 0.2.29.212
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.212
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 138,708 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 138708 first appears in π at position 295,802 of the decimal expansion (the 295,802ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.