30238928 has 20 divisors (see below), whose sum is σ = 61135968. Its totient is φ = 14461920.

The previous prime is 30238927. The next prime is 30238931. The reversal of 30238928 is 82983203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30238921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40718 + ... + 41453.

Almost surely, 2^30238928 is an apocalyptic number.

It is an amenable number.

30238928 is an abundant number, since it is smaller than the sum of its proper divisors (30897040).

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

30238928 is a wasteful number, since it uses less digits than its factorization.

30238928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82202 (or 82196 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30238928 is about 5498.9933624255. The cubic root of 30238928 is about 311.5459646167.

The spelling of 30238928 in words is "thirty million, two hundred thirty-eight thousand, nine hundred twenty-eight".