30708421056 has 56 divisors (see below), whose sum is σ = 90277076240. Its totient is φ = 10236139776.

The previous prime is 30708421049. The next prime is 30708421069. The reversal of 30708421056 is 65012480703.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30708421056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883811 + ... + 8887266.

Almost surely, 2^30708421056 is an apocalyptic number.

30708421056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30708421056 is an abundant number, since it is smaller than the sum of its proper divisors (59568655184).

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

30708421056 is a wasteful number, since it uses less digits than its factorization.

30708421056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17771098 (or 17771082 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 30708421056 in words is "thirty billion, seven hundred eight million, four hundred twenty-one thousand, fifty-six".