30428752 has 20 divisors (see below), whose sum is σ = 59924116. Its totient is φ = 14964480.

The previous prime is 30428737. The next prime is 30428789. The reversal of 30428752 is 25782403.

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 20034576 = 3224^2 + 4476^2 .

It is a congruent number.

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, 14613 + ... + 16564.

Almost surely, 2^30428752 is an apocalyptic number.

It is an amenable number.

30428752 is a deficient number, since it is larger than the sum of its proper divisors (29495364).

30428752 is a wasteful number, since it uses less digits than its factorization.

30428752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31246 (or 31240 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 30428752 is about 5516.2262462666. The cubic root of 30428752 is about 312.1965121865.

The spelling of 30428752 in words is "thirty million, four hundred twenty-eight thousand, seven hundred fifty-two".