30979764 has 72 divisors (see below), whose sum is σ = 81332160. Its totient is φ = 9936000.

The previous prime is 30979733. The next prime is 30979777. The reversal of 30979764 is 46797903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205089 + ... + 205239.

Almost surely, 2^30979764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30979764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40666080).

30979764 is an abundant number, since it is smaller than the sum of its proper divisors (50352396).

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

30979764 is a wasteful number, since it uses less digits than its factorization.

30979764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 30979764 is about 5565.9468197244. The cubic root of 30979764 is about 314.0696966198.

The spelling of 30979764 in words is "thirty million, nine hundred seventy-nine thousand, seven hundred sixty-four".