30733988 has 6 divisors (see below), whose sum is σ = 53784486. Its totient is φ = 15366992.

The previous prime is 30733979. The next prime is 30733991. The reversal of 30733988 is 88933703.

It can be written as a sum of positive squares in only one way, i.e., 26604964 + 4129024 = 5158^2 + 2032^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3841745 + ... + 3841752.

It is an arithmetic number, because the mean of its divisors is an integer number (8964081).

Almost surely, 2^30733988 is an apocalyptic number.

It is an amenable number.

30733988 is a deficient number, since it is larger than the sum of its proper divisors (23050498).

30733988 is a wasteful number, since it uses less digits than its factorization.

30733988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7683501 (or 7683499 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 30733988 is about 5543.8243117906. The cubic root of 30733988 is about 313.2369398170.

The spelling of 30733988 in words is "thirty million, seven hundred thirty-three thousand, nine hundred eighty-eight".