30286928 has 40 divisors (see below), whose sum is σ = 71013312. Its totient is φ = 12215808.

The previous prime is 30286891. The next prime is 30286939. The reversal of 30286928 is 82968203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30286891 and 30286900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6050 + ... + 9857.

Almost surely, 2^30286928 is an apocalyptic number.

It is an amenable number.

30286928 is an abundant number, since it is smaller than the sum of its proper divisors (40726384).

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

30286928 is a wasteful number, since it uses less digits than its factorization.

30286928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15939 (or 15933 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 30286928 is about 5503.3560669831. The cubic root of 30286928 is about 311.7107224493.

The spelling of 30286928 in words is "thirty million, two hundred eighty-six thousand, nine hundred twenty-eight".