30790528 has 16 divisors (see below), whose sum is σ = 61340760. Its totient is φ = 15395200.

The previous prime is 30790493. The next prime is 30790531. The reversal of 30790528 is 82509703.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×30790528² = 1896113229037568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30790493 and 30790502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120148 + ... + 120403.

Almost surely, 2^30790528 is an apocalyptic number.

It is an amenable number.

30790528 is a deficient number, since it is larger than the sum of its proper divisors (30550232).

30790528 is an equidigital number, since it uses as much as digits as its factorization.

30790528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240565 (or 240553 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 30790528 is about 5548.9213366203. The cubic root of 30790528 is about 313.4289050044.

The spelling of 30790528 in words is "thirty million, seven hundred ninety thousand, five hundred twenty-eight".