161,472
161,472 is a composite number, even.
161,472 (one hundred sixty-one thousand four hundred seventy-two) is an even 6-digit number. It is a composite number with 42 divisors, and factors as 2⁶ × 3 × 29². Its proper divisors sum to 280,996, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x276C0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 336
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 274,161
- Recamán's sequence
- a(199,212) = 161,472
- Square (n²)
- 26,073,206,784
- Cube (n³)
- 4,210,092,845,826,048
- Divisor count
- 42
- σ(n) — sum of divisors
- 442,468
- φ(n) — Euler's totient
- 51,968
- Sum of prime factors
- 73
Primality
Prime factorization: 2 6 × 3 × 29 2
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√161,472 = [401; (1, 5, 11, 6, 1, 1, 4, 3, 1, 1, 1, 4, 8, 1, 1, 12, 34, 1, 6, 3, 1, 2, 1, 1, …)]
Representations
- In words
- one hundred sixty-one thousand four hundred seventy-two
- Ordinal
- 161472nd
- Binary
- 100111011011000000
- Octal
- 473300
- Hexadecimal
- 0x276C0
- Base64
- AnbA
- One's complement
- 4,294,805,823 (32-bit)
- Scientific notation
- 1.61472 × 10⁵
- As a duration
- 161,472 s = 1 day, 20 hours, 51 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξαυοβʹ
- Chinese
- 一十六萬一千四百七十二
- Chinese (financial)
- 壹拾陸萬壹仟肆佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 161472, here are decompositions:
- 11 + 161461 = 161472
- 13 + 161459 = 161472
- 19 + 161453 = 161472
- 61 + 161411 = 161472
- 109 + 161363 = 161472
- 131 + 161341 = 161472
- 139 + 161333 = 161472
- 149 + 161323 = 161472
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A7 9B 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.118.192.
- Address
- 0.2.118.192
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.118.192
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 161,472 and was likely granted around 1874.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 161472 first appears in π at position 45,442 of the decimal expansion (the 45,442ordinal-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°.