30409204 has 36 divisors (see below), whose sum is σ = 62497764. Its totient is φ = 12907776.

The previous prime is 30409193. The next prime is 30409217. The reversal of 30409204 is 40290403.

It can be written as a sum of positive squares in 2 ways, for example, as 15586704 + 14822500 = 3948^2 + 3850^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21462 + ... + 22834.

It is an arithmetic number, because the mean of its divisors is an integer number (1736049).

Almost surely, 2^30409204 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 30409204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31248882).

30409204 is an abundant number, since it is smaller than the sum of its proper divisors (32088560).

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

30409204 is a wasteful number, since it uses less digits than its factorization.

30409204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30409204 is about 5514.4540980953. The cubic root of 30409204 is about 312.1296442372.

Adding to 30409204 its reverse (40290403), we get a palindrome (70699607).

The spelling of 30409204 in words is "thirty million, four hundred nine thousand, two hundred four".