143,728
143,728 is a composite number, even.
143,728 (one hundred forty-three thousand seven hundred twenty-eight) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 13 × 691. Its proper divisors sum to 156,600, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x23170.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 1,344
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 827,341
- Recamán's sequence
- a(220,960) = 143,728
- Square (n²)
- 20,657,737,984
- Cube (n³)
- 2,969,095,364,964,352
- Divisor count
- 20
- σ(n) — sum of divisors
- 300,328
- φ(n) — Euler's totient
- 66,240
- Sum of prime factors
- 712
Primality
Prime factorization: 2 4 × 13 × 691
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√143,728 = [379; (8, 1, 2, 2, 62, 1, 3, 6, 3, 1, 1, 83, 1, 2, 8, 2, 1, 1, 1, 2, 6, 1, 1, 1, …)]
Representations
- In words
- one hundred forty-three thousand seven hundred twenty-eight
- Ordinal
- 143728th
- Binary
- 100011000101110000
- Octal
- 430560
- Hexadecimal
- 0x23170
- Base64
- AjFw
- One's complement
- 4,294,823,567 (32-bit)
- Scientific notation
- 1.43728 × 10⁵
- As a duration
- 143,728 s = 1 day, 15 hours, 55 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρμγψκηʹ
- Mayan (base 20)
- 𝋱·𝋳·𝋦·𝋨
- Chinese
- 一十四萬三千七百二十八
- Chinese (financial)
- 壹拾肆萬參仟柒佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 143728, here are decompositions:
- 17 + 143711 = 143728
- 29 + 143699 = 143728
- 41 + 143687 = 143728
- 59 + 143669 = 143728
- 191 + 143537 = 143728
- 227 + 143501 = 143728
- 239 + 143489 = 143728
- 251 + 143477 = 143728
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 85 B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.49.112.
- Address
- 0.2.49.112
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.49.112
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 143,728 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 143728 first appears in π at position 583,506 of the decimal expansion (the 583,506ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.