30655128 has 32 divisors (see below), whose sum is σ = 87586560. Its totient is φ = 8758560.

The previous prime is 30655127. The next prime is 30655171. The reversal of 30655128 is 82155603.

It is a junction number, because it is equal to n+sod(n) for n = 30655095 and 30655104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30655127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91068 + ... + 91403.

It is an arithmetic number, because the mean of its divisors is an integer number (2737080).

Almost surely, 2^30655128 is an apocalyptic number.

It is an amenable number.

30655128 is an abundant number, since it is smaller than the sum of its proper divisors (56931432).

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

30655128 is a wasteful number, since it uses less digits than its factorization.

30655128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182487 (or 182483 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 30655128 is about 5536.7073247554. The cubic root of 30655128 is about 312.9687999468.

The spelling of 30655128 in words is "thirty million, six hundred fifty-five thousand, one hundred twenty-eight".