30487872 has 28 divisors (see below), whose sum is σ = 80666336. Its totient is φ = 10162560.

The previous prime is 30487867. The next prime is 30487907. The reversal of 30487872 is 27878403.

It is a self number, because there is not a number n which added to its sum of digits gives 30487872.

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, 79204 + ... + 79587.

Almost surely, 2^30487872 is an apocalyptic number.

30487872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30487872 is an abundant number, since it is smaller than the sum of its proper divisors (50178464).

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

30487872 is a wasteful number, since it uses less digits than its factorization.

30487872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158806 (or 158796 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 30487872 is about 5521.5823818902. The cubic root of 30487872 is about 312.3985701753.

The spelling of 30487872 in words is "thirty million, four hundred eighty-seven thousand, eight hundred seventy-two".