30556768 has 48 divisors (see below), whose sum is σ = 67060224. Its totient is φ = 13586560.

The previous prime is 30556751. The next prime is 30556819. The reversal of 30556768 is 86765503.

It is a self number, because there is not a number n which added to its sum of digits gives 30556768.

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, 15621 + ... + 17467.

It is an arithmetic number, because the mean of its divisors is an integer number (1397088).

Almost surely, 2^30556768 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 30556768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33530112).

30556768 is an abundant number, since it is smaller than the sum of its proper divisors (36503456).

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

30556768 is a wasteful number, since it uses less digits than its factorization.

30556768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 30556768 is about 5527.8176525642. The cubic root of 30556768 is about 312.6337108870.

The spelling of 30556768 in words is "thirty million, five hundred fifty-six thousand, seven hundred sixty-eight".