162,440
162,440 is a composite number, even.
162,440 (one hundred sixty-two thousand four hundred forty) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 5 × 31 × 131. Its proper divisors sum to 217,720, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x27A88.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 44,261
- Recamán's sequence
- a(474,407) = 162,440
- Square (n²)
- 26,386,753,600
- Cube (n³)
- 4,286,264,254,784,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 380,160
- φ(n) — Euler's totient
- 62,400
- Sum of prime factors
- 173
Primality
Prime factorization: 2 3 × 5 × 31 × 131
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√162,440 = [403; (26, 806)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- one hundred sixty-two thousand four hundred forty
- Ordinal
- 162440th
- Binary
- 100111101010001000
- Octal
- 475210
- Hexadecimal
- 0x27A88
- Base64
- AnqI
- One's complement
- 4,294,804,855 (32-bit)
- Scientific notation
- 1.6244 × 10⁵
- As a duration
- 162,440 s = 1 day, 21 hours, 7 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρξβυμʹ
- Chinese
- 一十六萬二千四百四十
- Chinese (financial)
- 壹拾陸萬貳仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 162440, here are decompositions:
- 97 + 162343 = 162440
- 151 + 162289 = 162440
- 163 + 162277 = 162440
- 211 + 162229 = 162440
- 331 + 162109 = 162440
- 349 + 162091 = 162440
- 433 + 162007 = 162440
- 457 + 161983 = 162440
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A7 AA 88 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.122.136.
- Address
- 0.2.122.136
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.122.136
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 162,440 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 162440 first appears in π at position 71,478 of the decimal expansion (the 71,478ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.