157,472
157,472 is a composite number, even.
157,472 (one hundred fifty-seven thousand four hundred seventy-two) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2⁵ × 7 × 19 × 37. Its proper divisors sum to 225,568, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x26720.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 1,960
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 274,751
- Recamán's sequence
- a(202,920) = 157,472
- Square (n²)
- 24,797,430,784
- Cube (n³)
- 3,904,901,020,418,048
- Divisor count
- 48
- σ(n) — sum of divisors
- 383,040
- φ(n) — Euler's totient
- 62,208
- Sum of prime factors
- 73
Primality
Prime factorization: 2 5 × 7 × 19 × 37
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√157,472 = [396; (1, 4, 1, 3, 1, 6, 3, 2, 2, 2, 1, 197, 1, 2, 2, 2, 3, 6, 1, 3, 1, 4, 1, 792)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- one hundred fifty-seven thousand four hundred seventy-two
- Ordinal
- 157472nd
- Binary
- 100110011100100000
- Octal
- 463440
- Hexadecimal
- 0x26720
- Base64
- Amcg
- One's complement
- 4,294,809,823 (32-bit)
- Scientific notation
- 1.57472 × 10⁵
- As a duration
- 157,472 s = 1 day, 19 hours, 44 minutes, 32 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρνζυοβʹ
- Mayan (base 20)
- 𝋳·𝋭·𝋭·𝋬
- Chinese
- 一十五萬七千四百七十二
- Chinese (financial)
- 壹拾伍萬柒仟肆佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 157472, here are decompositions:
- 43 + 157429 = 157472
- 61 + 157411 = 157472
- 79 + 157393 = 157472
- 109 + 157363 = 157472
- 151 + 157321 = 157472
- 181 + 157291 = 157472
- 193 + 157279 = 157472
- 199 + 157273 = 157472
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A6 9C A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.103.32.
- Address
- 0.2.103.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.103.32
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 157,472 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 157472 first appears in π at position 327,110 of the decimal expansion (the 327,110ordinal-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.