494,400
494,400 is a composite number, even.
494,400 (four hundred ninety-four thousand four hundred) is an even 6-digit number. It is a composite number with 84 divisors, and factors as 2⁶ × 3 × 5² × 103. Its proper divisors sum to 1,143,392, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x78B40.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 19 bits
- Reversed
- 4,494
- Recamán's sequence
- a(150,480) = 494,400
- Square (n²)
- 244,431,360,000
- Cube (n³)
- 120,846,864,384,000,000
- Divisor count
- 84
- σ(n) — sum of divisors
- 1,637,792
- φ(n) — Euler's totient
- 130,560
- Sum of prime factors
- 128
Primality
Prime factorization: 2 6 × 3 × 5 2 × 103
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√494,400 = [703; (7, 2, 1, 3, 4, 1, 2, 7, 1, 27, 1, 4, 1, 1, 8, 2, 7, 1, 1, 13, 1, 1, 7, 2, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- four hundred ninety-four thousand four hundred
- Ordinal
- 494400th
- Binary
- 1111000101101000000
- Octal
- 1705500
- Hexadecimal
- 0x78B40
- Base64
- B4tA
- One's complement
- 4,294,472,895 (32-bit)
- Scientific notation
- 4.944 × 10⁵
- As a duration
- 494,400 s = 5 days, 17 hours, 20 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋 ·
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢
- Greek (Milesian)
- ͵υϟδυʹ
- Chinese
- 四十九萬四千四百
- Chinese (financial)
- 肆拾玖萬肆仟肆佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 494400, here are decompositions:
- 13 + 494387 = 494400
- 17 + 494383 = 494400
- 19 + 494381 = 494400
- 31 + 494369 = 494400
- 41 + 494359 = 494400
- 47 + 494353 = 494400
- 59 + 494341 = 494400
- 73 + 494327 = 494400
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.7.139.64.
- Address
- 0.7.139.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.7.139.64
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 494,400 and was likely granted around 1893.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 494400 first appears in π at position 32,565 of the decimal expansion (the 32,565ordinal-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°.