30938404 has 36 divisors (see below), whose sum is σ = 65729664. Its totient is φ = 12680976.

The previous prime is 30938399. The next prime is 30938429. The reversal of 30938404 is 40483903.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1077 + ... + 7939.

It is an arithmetic number, because the mean of its divisors is an integer number (1825824).

Almost surely, 2^30938404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30938404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32864832).

30938404 is an abundant number, since it is smaller than the sum of its proper divisors (34791260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30938404 is a wasteful number, since it uses less digits than its factorization.

30938404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904 (or 6895 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30938404 is about 5562.2301282849. The cubic root of 30938404 is about 313.9298665495.

The spelling of 30938404 in words is "thirty million, nine hundred thirty-eight thousand, four hundred four".