30628017840 has 160 divisors (see below), whose sum is σ = 108712327680. Its totient is φ = 6987681792.

The previous prime is 30628017811. The next prime is 30628017857. The reversal of 30628017840 is 4871082603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902296 + ... + 935624.

It is an arithmetic number, because the mean of its divisors is an integer number (679452048).

Almost surely, 2^30628017840 is an apocalyptic number.

30628017840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30628017840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54356163840).

30628017840 is an abundant number, since it is smaller than the sum of its proper divisors (78084309840).

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

30628017840 is a wasteful number, since it uses less digits than its factorization.

30628017840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33899 (or 33893 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 30628017840 in words is "thirty billion, six hundred twenty-eight million, seventeen thousand, eight hundred forty".