30506928 has 40 divisors (see below), whose sum is σ = 79148208. Its totient is φ = 10125312.

The previous prime is 30506921. The next prime is 30506941. The reversal of 30506928 is 82960503.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30506921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11100 + ... + 13572.

Almost surely, 2^30506928 is an apocalyptic number.

It is an amenable number.

30506928 is an abundant number, since it is smaller than the sum of its proper divisors (48641280).

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

30506928 is a wasteful number, since it uses less digits than its factorization.

30506928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 30506928 is about 5523.3077046277. The cubic root of 30506928 is about 312.4636433437.

The spelling of 30506928 in words is "thirty million, five hundred six thousand, nine hundred twenty-eight".