30972008 has 8 divisors (see below), whose sum is σ = 58072530. Its totient is φ = 15486000.

The previous prime is 30971989. The next prime is 30972041. The reversal of 30972008 is 80027903.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 11276164 = 4438^2 + 3358^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935743 + ... + 1935758.

Almost surely, 2^30972008 is an apocalyptic number.

It is an amenable number.

30972008 is a deficient number, since it is larger than the sum of its proper divisors (27100522).

30972008 is a wasteful number, since it uses less digits than its factorization.

30972008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871507 (or 3871503 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 30972008 is about 5565.2500393064. The cubic root of 30972008 is about 314.0434845859.

The spelling of 30972008 in words is "thirty million, nine hundred seventy-two thousand, eight".