30528708864 has 144 divisors (see below), whose sum is σ = 85195751424. Its totient is φ = 9686476800.

The previous prime is 30528708811. The next prime is 30528708913. The reversal of 30528708864 is 46880782503.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3723009 + ... + 3731199.

Almost surely, 2^30528708864 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 30528708864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42597875712).

30528708864 is an abundant number, since it is smaller than the sum of its proper divisors (54667042560).

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

30528708864 is a wasteful number, since it uses less digits than its factorization.

30528708864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444 (or 8430 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 30528708864 in words is "thirty billion, five hundred twenty-eight million, seven hundred eight thousand, eight hundred sixty-four".