30139372 has 12 divisors (see below), whose sum is σ = 53228560. Its totient is φ = 14931216.

The previous prime is 30139367. The next prime is 30139391. The reversal of 30139372 is 27393103.

It is a self number, because there is not a number n which added to its sum of digits gives 30139372.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34128 + ... + 34999.

Almost surely, 2^30139372 is an apocalyptic number.

It is an amenable number.

30139372 is a deficient number, since it is larger than the sum of its proper divisors (23089188).

30139372 is a wasteful number, since it uses less digits than its factorization.

30139372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69240 (or 69238 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30139372 is about 5489.9336972317. The cubic root of 30139372 is about 311.2036864903.

The spelling of 30139372 in words is "thirty million, one hundred thirty-nine thousand, three hundred seventy-two".