30628928188 has 24 divisors (see below), whose sum is σ = 56705264000. Its totient is φ = 14435525808.

The previous prime is 30628928177. The next prime is 30628928191. The reversal of 30628928188 is 88182982603.

It is a happy number.

It is a super-3 number, since 3×30628928188³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997470 + ... + 1027717.

Almost surely, 2^30628928188 is an apocalyptic number.

30628928188 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

30628928188 is a deficient number, since it is larger than the sum of its proper divisors (26076335812).

30628928188 is a wasteful number, since it uses less digits than its factorization.

30628928188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025409 (or 2025407 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 30628928188 in words is "thirty billion, six hundred twenty-eight million, nine hundred twenty-eight thousand, one hundred eighty-eight".