351640956 has 12 divisors (see below), whose sum is σ = 820495592. Its totient is φ = 117213648.

The previous prime is 351640909. The next prime is 351640973. The reversal of 351640956 is 659046153.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14651695 + ... + 14651718.

Almost surely, 2^351640956 is an apocalyptic number.

It is an amenable number.

351640956 is an abundant number, since it is smaller than the sum of its proper divisors (468854636).

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

351640956 is a wasteful number, since it uses less digits than its factorization.

351640956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29303420 (or 29303418 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 351640956 is about 18752.0920432895. The cubic root of 351640956 is about 705.8295190341.

The spelling of 351640956 in words is "three hundred fifty-one million, six hundred forty thousand, nine hundred fifty-six".