30979768 has 16 divisors (see below), whose sum is σ = 59323680. Its totient is φ = 15160128.

The previous prime is 30979733. The next prime is 30979777. The reversal of 30979768 is 86797903.

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, 40821 + ... + 41572.

It is an arithmetic number, because the mean of its divisors is an integer number (3707730).

Almost surely, 2^30979768 is an apocalyptic number.

It is an amenable number.

30979768 is a deficient number, since it is larger than the sum of its proper divisors (28343912).

30979768 is a wasteful number, since it uses less digits than its factorization.

30979768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82446 (or 82442 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 30979768 is about 5565.9471790523. The cubic root of 30979768 is about 314.0697101370.

The spelling of 30979768 in words is "thirty million, nine hundred seventy-nine thousand, seven hundred sixty-eight".