30628388 has 12 divisors (see below), whose sum is σ = 61256832. Its totient is φ = 13126440.

The previous prime is 30628369. The next prime is 30628393. The reversal of 30628388 is 88382603.

30628388 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546908 + ... + 546963.

It is an arithmetic number, because the mean of its divisors is an integer number (5104736).

Almost surely, 2^30628388 is an apocalyptic number.

It is an amenable number.

30628388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30628388 is a wasteful number, since it uses less digits than its factorization.

30628388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093882 (or 1093880 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 30628388 is about 5534.2920053066. The cubic root of 30628388 is about 312.8777741733.

The spelling of 30628388 in words is "thirty million, six hundred twenty-eight thousand, three hundred eighty-eight".