30800428 has 12 divisors (see below), whose sum is σ = 55357792. Its totient is φ = 14983920.

The previous prime is 30800411. The next prime is 30800449. The reversal of 30800428 is 82400803.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

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, 103908 + ... + 104203.

Almost surely, 2^30800428 is an apocalyptic number.

30800428 is the 2967-th centered heptagonal number.

It is an amenable number.

30800428 is a deficient number, since it is larger than the sum of its proper divisors (24557364).

30800428 is a wasteful number, since it uses less digits than its factorization.

30800428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208152 (or 208150 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 30800428 is about 5549.8133301941. The cubic root of 30800428 is about 313.4624934038.

The spelling of 30800428 in words is "thirty million, eight hundred thousand, four hundred twenty-eight".