490991256 has 48 divisors (see below), whose sum is σ = 1519736400. Its totient is φ = 140283072.

The previous prime is 490991219. The next prime is 490991261. The reversal of 490991256 is 652199094.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 486591 + ... + 487598.

It is an arithmetic number, because the mean of its divisors is an integer number (31661175).

Almost surely, 2^490991256 is an apocalyptic number.

It is an amenable number.

490991256 is an abundant number, since it is smaller than the sum of its proper divisors (1028745144).

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

490991256 is a wasteful number, since it uses less digits than its factorization.

490991256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974208 (or 974201 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 490991256 is about 22158.3224996840. The cubic root of 490991256 is about 788.9047772623.

The spelling of 490991256 in words is "four hundred ninety million, nine hundred ninety-one thousand, two hundred fifty-six".