30989976 has 16 divisors (see below), whose sum is σ = 77475000. Its totient is φ = 10329984.

The previous prime is 30989939. The next prime is 30989989. The reversal of 30989976 is 67998903.

It is a super-2 number, since 2×30989976² = 1920757224961152, which contains 22 as substring.

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, 645601 + ... + 645648.

Almost surely, 2^30989976 is an apocalyptic number.

It is an amenable number.

30989976 is an abundant number, since it is smaller than the sum of its proper divisors (46485024).

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

30989976 is a wasteful number, since it uses less digits than its factorization.

30989976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291258 (or 1291254 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 30989976 is about 5566.8641082750. The cubic root of 30989976 is about 314.1042022345.

The spelling of 30989976 in words is "thirty million, nine hundred eighty-nine thousand, nine hundred seventy-six".