494312640 has 112 divisors (see below), whose sum is σ = 1574608992. Its totient is φ = 131383296.

The previous prime is 494312593. The next prime is 494312657. The reversal of 494312640 is 46213494.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380472 + ... + 381768.

Almost surely, 2^494312640 is an apocalyptic number.

494312640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494312640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (787304496).

494312640 is an abundant number, since it is smaller than the sum of its proper divisors (1080296352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494312640 is a wasteful number, since it uses less digits than its factorization.

494312640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 494312640 is about 22233.1428277695. The cubic root of 494312640 is about 790.6796693177.

The spelling of 494312640 in words is "four hundred ninety-four million, three hundred twelve thousand, six hundred forty".