30401904 has 80 divisors (see below), whose sum is σ = 85744512. Its totient is φ = 9225984.

The previous prime is 30401893. The next prime is 30401911. The reversal of 30401904 is 40910403.

It is a congruent number.

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, 51499 + ... + 52085.

Almost surely, 2^30401904 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 30401904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42872256).

30401904 is an abundant number, since it is smaller than the sum of its proper divisors (55342608).

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

30401904 is a wasteful number, since it uses less digits than its factorization.

30401904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30401904 is about 5513.7921614802. The cubic root of 30401904 is about 312.1046657389.

The spelling of 30401904 in words is "thirty million, four hundred one thousand, nine hundred four".