30187968 has 28 divisors (see below), whose sum is σ = 79872840. Its totient is φ = 10062592.

The previous prime is 30187957. The next prime is 30188023. The reversal of 30187968 is 86978103.

It is a super-2 number, since 2×30187968² = 1822626823938048, which contains 22 as substring.

It is a congruent number.

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, 78423 + ... + 78806.

Almost surely, 2^30187968 is an apocalyptic number.

It is an amenable number.

30187968 is an abundant number, since it is smaller than the sum of its proper divisors (49684872).

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

30187968 is a wasteful number, since it uses less digits than its factorization.

30187968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157244 (or 157234 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 30187968 is about 5494.3578332686. The cubic root of 30187968 is about 311.3708557940.

The spelling of 30187968 in words is "thirty million, one hundred eighty-seven thousand, nine hundred sixty-eight".