139,748
139,748 is a composite number, even.
139,748 (one hundred thirty-nine thousand seven hundred forty-eight) is an even 6-digit number. It is a composite number with 36 divisors, and factors as 2² × 7² × 23 × 31. Its proper divisors sum to 166,684, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x221E4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 32
- Digit product
- 6,048
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 847,931
- Recamán's sequence
- a(489,331) = 139,748
- Square (n²)
- 19,529,503,504
- Cube (n³)
- 2,729,209,055,676,992
- Divisor count
- 36
- σ(n) — sum of divisors
- 306,432
- φ(n) — Euler's totient
- 55,440
- Sum of prime factors
- 72
Primality
Prime factorization: 2 2 × 7 2 × 23 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,748 = [373; (1, 4, 1, 5, 2, 1, 8, 3, 10, 1, 2, 14, 1, 10, 1, 2, 1, 22, 1, 1, 1, 1, 1, 2, …)]
Period length 60 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand seven hundred forty-eight
- Ordinal
- 139748th
- Binary
- 100010000111100100
- Octal
- 420744
- Hexadecimal
- 0x221E4
- Base64
- AiHk
- One's complement
- 4,294,827,547 (32-bit)
- Scientific notation
- 1.39748 × 10⁵
- As a duration
- 139,748 s = 1 day, 14 hours, 49 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθψμηʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋧·𝋨
- Chinese
- 一十三萬九千七百四十八
- Chinese (financial)
- 壹拾參萬玖仟柒佰肆拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139748, here are decompositions:
- 19 + 139729 = 139748
- 67 + 139681 = 139748
- 139 + 139609 = 139748
- 151 + 139597 = 139748
- 157 + 139591 = 139748
- 211 + 139537 = 139748
- 379 + 139369 = 139748
- 409 + 139339 = 139748
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 87 A4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.228.
- Address
- 0.2.33.228
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.228
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 139,748 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 139748 first appears in π at position 911,422 of the decimal expansion (the 911,422ordinal-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.