30680428 has 12 divisors (see below), whose sum is σ = 54704160. Its totient is φ = 15050672.

The previous prime is 30680417. The next prime is 30680471. The reversal of 30680428 is 82408603.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30680428.

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, 72148 + ... + 72571.

It is an arithmetic number, because the mean of its divisors is an integer number (4558680).

Almost surely, 2^30680428 is an apocalyptic number.

It is an amenable number.

30680428 is a deficient number, since it is larger than the sum of its proper divisors (24023732).

30680428 is a wasteful number, since it uses less digits than its factorization.

30680428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144776 (or 144774 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30680428 is about 5538.9916049765. The cubic root of 30680428 is about 313.0548750872.

The spelling of 30680428 in words is "thirty million, six hundred eighty thousand, four hundred twenty-eight".