172,200
172,200 is a composite number, even.
172,200 (one hundred seventy-two thousand two hundred) is an even 6-digit number. It is a composite number with 96 divisors, and factors as 2³ × 3 × 5² × 7 × 41. Its proper divisors sum to 452,760, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2A0A8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 2,271
- Recamán's sequence
- a(191,364) = 172,200
- Square (n²)
- 29,652,840,000
- Cube (n³)
- 5,106,219,048,000,000
- Divisor count
- 96
- σ(n) — sum of divisors
- 624,960
- φ(n) — Euler's totient
- 38,400
- Sum of prime factors
- 67
Primality
Prime factorization: 2 3 × 3 × 5 2 × 7 × 41
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√172,200 = [414; (1, 32, 5, 32, 1, 828)]
Period length 6 — the block in parentheses repeats forever.
Representations
- In words
- one hundred seventy-two thousand two hundred
- Ordinal
- 172200th
- Binary
- 101010000010101000
- Octal
- 520250
- Hexadecimal
- 0x2A0A8
- Base64
- AqCo
- One's complement
- 4,294,795,095 (32-bit)
- Scientific notation
- 1.722 × 10⁵
- As a duration
- 172,200 s = 1 day, 23 hours, 50 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢
- Greek (Milesian)
- ͵ροβσʹ
- Chinese
- 一十七萬二千二百
- Chinese (financial)
- 壹拾柒萬貳仟貳佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 172200, here are decompositions:
- 19 + 172181 = 172200
- 29 + 172171 = 172200
- 31 + 172169 = 172200
- 43 + 172157 = 172200
- 47 + 172153 = 172200
- 53 + 172147 = 172200
- 73 + 172127 = 172200
- 103 + 172097 = 172200
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 AA 82 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.160.168.
- Address
- 0.2.160.168
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.160.168
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 172,200 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°.