149,840
149,840 is a composite number, even.
149,840 (one hundred forty-nine thousand eight hundred forty) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 5 × 1,873. Its proper divisors sum to 198,724, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x24950.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 48,941
- Square (n²)
- 22,452,025,600
- Cube (n³)
- 3,364,211,515,904,000
- Divisor count
- 20
- σ(n) — sum of divisors
- 348,564
- φ(n) — Euler's totient
- 59,904
- Sum of prime factors
- 1,886
Primality
Prime factorization: 2 4 × 5 × 1873
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√149,840 = [387; (10, 1, 9, 3, 1, 1, 1, 1, 11, 2, 17, 8, 1, 1, 1, 3, 1, 2, 1, 11, 2, 1, 3, 2, …)]
Representations
- In words
- one hundred forty-nine thousand eight hundred forty
- Ordinal
- 149840th
- Binary
- 100100100101010000
- Octal
- 444520
- Hexadecimal
- 0x24950
- Base64
- AklQ
- One's complement
- 4,294,817,455 (32-bit)
- Scientific notation
- 1.4984 × 10⁵
- As a duration
- 149,840 s = 1 day, 17 hours, 37 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμθωμʹ
- Mayan (base 20)
- 𝋲·𝋮·𝋬·𝋠
- Chinese
- 一十四萬九千八百四十
- Chinese (financial)
- 壹拾肆萬玖仟捌佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 149840, here are decompositions:
- 3 + 149837 = 149840
- 13 + 149827 = 149840
- 37 + 149803 = 149840
- 73 + 149767 = 149840
- 109 + 149731 = 149840
- 127 + 149713 = 149840
- 151 + 149689 = 149840
- 211 + 149629 = 149840
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A4 A5 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.73.80.
- Address
- 0.2.73.80
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.73.80
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 149,840 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.