172,272
172,272 is a composite number, even.
172,272 (one hundred seventy-two thousand two hundred seventy-two) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 3 × 37 × 97. Its proper divisors sum to 289,504, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2A0F0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 392
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 272,271
- Recamán's sequence
- a(191,220) = 172,272
- Square (n²)
- 29,677,641,984
- Cube (n³)
- 5,112,626,739,867,648
- Divisor count
- 40
- σ(n) — sum of divisors
- 461,776
- φ(n) — Euler's totient
- 55,296
- Sum of prime factors
- 145
Primality
Prime factorization: 2 4 × 3 × 37 × 97
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√172,272 = [415; (17, 1, 1, 1, 18, 4, 1, 6, 17, 6, 1, 4, 18, 1, 1, 1, 17, 830)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one hundred seventy-two thousand two hundred seventy-two
- Ordinal
- 172272nd
- Binary
- 101010000011110000
- Octal
- 520360
- Hexadecimal
- 0x2A0F0
- Base64
- AqDw
- One's complement
- 4,294,795,023 (32-bit)
- Scientific notation
- 1.72272 × 10⁵
- As a duration
- 172,272 s = 1 day, 23 hours, 51 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ροβσοβʹ
- Chinese
- 一十七萬二千二百七十二
- Chinese (financial)
- 壹拾柒萬貳仟貳佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 172272, here are decompositions:
- 13 + 172259 = 172272
- 29 + 172243 = 172272
- 53 + 172219 = 172272
- 59 + 172213 = 172272
- 73 + 172199 = 172272
- 101 + 172171 = 172272
- 103 + 172169 = 172272
- 179 + 172093 = 172272
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 AA 83 B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.160.240.
- Address
- 0.2.160.240
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.160.240
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 172,272 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 172272 first appears in π at position 85,451 of the decimal expansion (the 85,451ordinal-suffix:st 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°.