30989924 has 24 divisors (see below), whose sum is σ = 64675968. Its totient is φ = 12703680.

The previous prime is 30989909. The next prime is 30989939. The reversal of 30989924 is 42998903.

It is an interprime number because it is at equal distance from previous prime (30989909) and next prime (30989939).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23417 + ... + 24704.

It is an arithmetic number, because the mean of its divisors is an integer number (2694832).

Almost surely, 2^30989924 is an apocalyptic number.

It is an amenable number.

30989924 is an abundant number, since it is smaller than the sum of its proper divisors (33686044).

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

30989924 is a wasteful number, since it uses less digits than its factorization.

30989924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48155 (or 48153 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 30989924 is about 5566.8594377800. The cubic root of 30989924 is about 314.1040265494.

It can be divided in two parts, 30989 and 924, that added together give a palindrome (31913).

The spelling of 30989924 in words is "thirty million, nine hundred eighty-nine thousand, nine hundred twenty-four".