30388672 has 28 divisors (see below), whose sum is σ = 60492640. Its totient is φ = 15146496.

The previous prime is 30388669. The next prime is 30388697. The reversal of 30388672 is 27688303.

It is a congruent number.

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, 28729 + ... + 29767.

Almost surely, 2^30388672 is an apocalyptic number.

30388672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30388672 is a deficient number, since it is larger than the sum of its proper divisors (30103968).

30388672 is a wasteful number, since it uses less digits than its factorization.

30388672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 30388672 is about 5512.5921307494. The cubic root of 30388672 is about 312.0593794500.

The spelling of 30388672 in words is "thirty million, three hundred eighty-eight thousand, six hundred seventy-two".