30255808 has 42 divisors (see below), whose sum is σ = 66010028. Its totient is φ = 13749120.

The previous prime is 30255781. The next prime is 30255821. The reversal of 30255808 is 80855203.

It is a self number, because there is not a number n which added to its sum of digits gives 30255808.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5791 + ... + 9697.

Almost surely, 2^30255808 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 30255808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33005014).

30255808 is an abundant number, since it is smaller than the sum of its proper divisors (35754220).

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

30255808 is a wasteful number, since it uses less digits than its factorization.

30255808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941 (or 3920 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 30255808 is about 5500.5279746584. The cubic root of 30255808 is about 311.6039243174.

The spelling of 30255808 in words is "thirty million, two hundred fifty-five thousand, eight hundred eight".