30656768 has 36 divisors (see below), whose sum is σ = 63184128. Its totient is φ = 14830080.

The previous prime is 30656767. The next prime is 30656771. The reversal of 30656768 is 86765603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30656767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6005 + ... + 9867.

Almost surely, 2^30656768 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 30656768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31592064).

30656768 is an abundant number, since it is smaller than the sum of its proper divisors (32527360).

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

30656768 is an equidigital number, since it uses as much as digits as its factorization.

30656768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910 (or 3896 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 30656768 is about 5536.8554252391. The cubic root of 30656768 is about 312.9743809563.

The spelling of 30656768 in words is "thirty million, six hundred fifty-six thousand, seven hundred sixty-eight".