30405804 has 144 divisors (see below), whose sum is σ = 88542720. Its totient is φ = 8037120.

The previous prime is 30405797. The next prime is 30405901. The reversal of 30405804 is 40850403.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 646909 + ... + 646955.

It is an arithmetic number, because the mean of its divisors is an integer number (614880).

Almost surely, 2^30405804 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 30405804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44271360).

30405804 is an abundant number, since it is smaller than the sum of its proper divisors (58136916).

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

30405804 is a wasteful number, since it uses less digits than its factorization.

30405804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 30405804 is about 5514.1458087359. The cubic root of 30405804 is about 312.1180109135.

The spelling of 30405804 in words is "thirty million, four hundred five thousand, eight hundred four".