30138764 has 12 divisors (see below), whose sum is σ = 52833984. Its totient is φ = 15043344.

The previous prime is 30138709. The next prime is 30138791. The reversal of 30138764 is 46783103.

It is a self number, because there is not a number n which added to its sum of digits gives 30138764.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779 + ... + 8634.

It is an arithmetic number, because the mean of its divisors is an integer number (4402832).

Almost surely, 2^30138764 is an apocalyptic number.

It is an amenable number.

30138764 is a deficient number, since it is larger than the sum of its proper divisors (22695220).

30138764 is a wasteful number, since it uses less digits than its factorization.

30138764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024 (or 13022 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 30138764 is about 5489.8783228775. The cubic root of 30138764 is about 311.2015938442.

The spelling of 30138764 in words is "thirty million, one hundred thirty-eight thousand, seven hundred sixty-four".