30655788 has 12 divisors (see below), whose sum is σ = 71530200. Its totient is φ = 10218592.

The previous prime is 30655771. The next prime is 30655799. The reversal of 30655788 is 88755603.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277313 + ... + 1277336.

It is an arithmetic number, because the mean of its divisors is an integer number (5960850).

Almost surely, 2^30655788 is an apocalyptic number.

It is an amenable number.

30655788 is an abundant number, since it is smaller than the sum of its proper divisors (40874412).

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

30655788 is a wasteful number, since it uses less digits than its factorization.

30655788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554656 (or 2554654 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 30655788 is about 5536.7669266459. The cubic root of 30655788 is about 312.9710459868.

The spelling of 30655788 in words is "thirty million, six hundred fifty-five thousand, seven hundred eighty-eight".