229185904 has 30 divisors (see below), whose sum is σ = 468660480. Its totient is φ = 108559008.

The previous prime is 229185893. The next prime is 229185917. The reversal of 229185904 is 409581922.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14064 + ... + 25615.

It is an arithmetic number, because the mean of its divisors is an integer number (15622016).

Almost surely, 2^229185904 is an apocalyptic number.

It is an amenable number.

229185904 is an abundant number, since it is smaller than the sum of its proper divisors (239474576).

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

229185904 is a wasteful number, since it uses less digits than its factorization.

229185904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39725 (or 39700 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 229185904 is about 15138.8871453618. The cubic root of 229185904 is about 611.9688280647.

The spelling of 229185904 in words is "two hundred twenty-nine million, one hundred eighty-five thousand, nine hundred four".