172,040
172,040 is a composite number, even.
172,040 (one hundred seventy-two thousand forty) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 5 × 11 × 17 × 23. Its proper divisors sum to 294,520, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2A008.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 40,271
- Recamán's sequence
- a(191,684) = 172,040
- Square (n²)
- 29,597,761,600
- Cube (n³)
- 5,091,998,905,664,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 466,560
- φ(n) — Euler's totient
- 56,320
- Sum of prime factors
- 62
Primality
Prime factorization: 2 3 × 5 × 11 × 17 × 23
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√172,040 = [414; (1, 3, 2, 16, 2, 16, 2, 3, 1, 828)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred seventy-two thousand forty
- Ordinal
- 172040th
- Binary
- 101010000000001000
- Octal
- 520010
- Hexadecimal
- 0x2A008
- Base64
- AqAI
- One's complement
- 4,294,795,255 (32-bit)
- Scientific notation
- 1.7204 × 10⁵
- As a duration
- 172,040 s = 1 day, 23 hours, 47 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ροβμʹ
- Chinese
- 一十七萬二千零四十
- Chinese (financial)
- 壹拾柒萬貳仟零肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 172040, here are decompositions:
- 13 + 172027 = 172040
- 19 + 172021 = 172040
- 31 + 172009 = 172040
- 103 + 171937 = 172040
- 151 + 171889 = 172040
- 163 + 171877 = 172040
- 229 + 171811 = 172040
- 241 + 171799 = 172040
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 AA 80 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.160.8.
- Address
- 0.2.160.8
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.160.8
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 172,040 and was likely granted around 1874.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.