30996528 has 80 divisors (see below), whose sum is σ = 85042176. Its totient is φ = 9711360.

The previous prime is 30996523. The next prime is 30996551. The reversal of 30996528 is 82569903.

It is a self number, because there is not a number n which added to its sum of digits gives 30996528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30996521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54775 + ... + 55337.

Almost surely, 2^30996528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30996528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42521088).

30996528 is an abundant number, since it is smaller than the sum of its proper divisors (54045648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30996528 is a wasteful number, since it uses less digits than its factorization.

30996528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 30996528 is about 5567.4525592950. The cubic root of 30996528 is about 314.1263369802.

The spelling of 30996528 in words is "thirty million, nine hundred ninety-six thousand, five hundred twenty-eight".