30091864 has 16 divisors (see below), whose sum is σ = 61551720. Its totient is φ = 13678080.

The previous prime is 30091861. The next prime is 30091883. The reversal of 30091864 is 46819003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30091861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170889 + ... + 171064.

Almost surely, 2^30091864 is an apocalyptic number.

It is an amenable number.

30091864 is an abundant number, since it is smaller than the sum of its proper divisors (31459856).

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

30091864 is a wasteful number, since it uses less digits than its factorization.

30091864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341970 (or 341966 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30091864 is about 5485.6051626051. The cubic root of 30091864 is about 311.0400860920.

The spelling of 30091864 in words is "thirty million, ninety-one thousand, eight hundred sixty-four".