30772988 has 18 divisors (see below), whose sum is σ = 56299824. Its totient is φ = 14716504.

The previous prime is 30772981. The next prime is 30772991. The reversal of 30772988 is 88927703.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772981) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5156 + ... + 9387.

It is an arithmetic number, because the mean of its divisors is an integer number (3127768).

Almost surely, 2^30772988 is an apocalyptic number.

It is an amenable number.

30772988 is a deficient number, since it is larger than the sum of its proper divisors (25526836).

30772988 is a wasteful number, since it uses less digits than its factorization.

30772988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14593 (or 14568 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 30772988 is about 5547.3406241189. The cubic root of 30772988 is about 313.3693781782.

The spelling of 30772988 in words is "thirty million, seven hundred seventy-two thousand, nine hundred eighty-eight".