504407904 has 384 divisors, whose sum is σ = 1849236480. Its totient is φ = 116121600.

The previous prime is 504407899. The next prime is 504407923. The reversal of 504407904 is 409704405.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2786694 + ... + 2786874.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^504407904 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 504407904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924618240).

504407904 is an abundant number, since it is smaller than the sum of its proper divisors (1344828576).

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

504407904 is a wasteful number, since it uses less digits than its factorization.

504407904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 504407904 is about 22459.0272273756. The cubic root of 504407904 is about 796.0260759283.

The spelling of 504407904 in words is "five hundred four million, four hundred seven thousand, nine hundred four".