30528423 has 6 divisors (see below), whose sum is σ = 44096624. Its totient is φ = 20352276.

The previous prime is 30528373. The next prime is 30528437. The reversal of 30528423 is 32482503.

It is not a de Polignac number, because 30528423 - 2⁸ = 30528167 is a prime.

It is a super-2 number, since 2×30528423² = 1863969221733858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30528623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1696015 + ... + 1696032.

Almost surely, 2^30528423 is an apocalyptic number.

30528423 is a deficient number, since it is larger than the sum of its proper divisors (13568201).

30528423 is a wasteful number, since it uses less digits than its factorization.

30528423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3392053 (or 3392050 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 30528423 is about 5525.2532068675. The cubic root of 30528423 is about 312.5370127893.

The spelling of 30528423 in words is "thirty million, five hundred twenty-eight thousand, four hundred twenty-three".