30293904 has 80 divisors (see below), whose sum is σ = 83923200. Its totient is φ = 9387648.

The previous prime is 30293891. The next prime is 30293911. The reversal of 30293904 is 40939203.

It is a super-2 number, since 2×30293904² = 1835441239122432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53527 + ... + 54089.

It is an arithmetic number, because the mean of its divisors is an integer number (1049040).

Almost surely, 2^30293904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30293904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41961600).

30293904 is an abundant number, since it is smaller than the sum of its proper divisors (53629296).

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

30293904 is a wasteful number, since it uses less digits than its factorization.

30293904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 30293904 is about 5503.9898255720. The cubic root of 30293904 is about 311.7346527631.

The spelling of 30293904 in words is "thirty million, two hundred ninety-three thousand, nine hundred four".