30742528 has 48 divisors (see below), whose sum is σ = 65159640. Its totient is φ = 14450688.

The previous prime is 30742519. The next prime is 30742531. The reversal of 30742528 is 82524703.

It is a self number, because there is not a number n which added to its sum of digits gives 30742528.

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, 34375 + ... + 35257.

Almost surely, 2^30742528 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 30742528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32579820).

30742528 is an abundant number, since it is smaller than the sum of its proper divisors (34417112).

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

30742528 is an equidigital number, since it uses as much as digits as its factorization.

30742528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 902 counting only the distinct ones).

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

The square root of 30742528 is about 5544.5944847211. The cubic root of 30742528 is about 313.2659499987.

The spelling of 30742528 in words is "thirty million, seven hundred forty-two thousand, five hundred twenty-eight".