146,640
146,640 is a composite number, even.
146,640 (one hundred forty-six thousand six hundred forty) is an even 6-digit number. It is a composite number with 80 divisors, and factors as 2⁴ × 3 × 5 × 13 × 47. Its proper divisors sum to 353,328, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x23CD0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 46,641
- Recamán's sequence
- a(215,136) = 146,640
- Square (n²)
- 21,503,289,600
- Cube (n³)
- 3,153,242,386,944,000
- Divisor count
- 80
- σ(n) — sum of divisors
- 499,968
- φ(n) — Euler's totient
- 35,328
- Sum of prime factors
- 76
Primality
Prime factorization: 2 4 × 3 × 5 × 13 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√146,640 = [382; (1, 14, 1, 1, 1, 2, 2, 11, 1, 1, 4, 1, 18, 1, 4, 1, 1, 11, 2, 2, 1, 1, 1, 14, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- one hundred forty-six thousand six hundred forty
- Ordinal
- 146640th
- Binary
- 100011110011010000
- Octal
- 436320
- Hexadecimal
- 0x23CD0
- Base64
- AjzQ
- One's complement
- 4,294,820,655 (32-bit)
- Scientific notation
- 1.4664 × 10⁵
- As a duration
- 146,640 s = 1 day, 16 hours, 44 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρμϛχμʹ
- Mayan (base 20)
- 𝋲·𝋦·𝋬·𝋠
- Chinese
- 一十四萬六千六百四十
- Chinese (financial)
- 壹拾肆萬陸仟陸佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 146640, here are decompositions:
- 23 + 146617 = 146640
- 31 + 146609 = 146640
- 37 + 146603 = 146640
- 59 + 146581 = 146640
- 97 + 146543 = 146640
- 101 + 146539 = 146640
- 113 + 146527 = 146640
- 127 + 146513 = 146640
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A3 B3 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.60.208.
- Address
- 0.2.60.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.60.208
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 146,640 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 146640 first appears in π at position 90,870 of the decimal expansion (the 90,870ordinal-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°.