30313768 has 8 divisors (see below), whose sum is σ = 56838330. Its totient is φ = 15156880.

The previous prime is 30313763. The next prime is 30313781. The reversal of 30313768 is 86731303.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 8054244 = 4718^2 + 2838^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30313763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1894603 + ... + 1894618.

Almost surely, 2^30313768 is an apocalyptic number.

It is an amenable number.

30313768 is a deficient number, since it is larger than the sum of its proper divisors (26524562).

30313768 is a wasteful number, since it uses less digits than its factorization.

30313768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789227 (or 3789223 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 30313768 is about 5505.7940390102. The cubic root of 30313768 is about 311.8027736650.

The spelling of 30313768 in words is "thirty million, three hundred thirteen thousand, seven hundred sixty-eight".