904168728 has 96 divisors (see below), whose sum is σ = 2549383200. Its totient is φ = 289142784.

The previous prime is 904168693. The next prime is 904168747. The reversal of 904168728 is 827861409.

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 23 ways as a sum of consecutive naturals, for example, 347400 + ... + 349992.

It is an arithmetic number, because the mean of its divisors is an integer number (26556075).

Almost surely, 2^904168728 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 904168728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274691600).

904168728 is an abundant number, since it is smaller than the sum of its proper divisors (1645214472).

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

904168728 is a wasteful number, since it uses less digits than its factorization.

904168728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801 (or 2794 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 904168728 is about 30069.3985307322. The cubic root of 904168728 is about 966.9777787881.

The spelling of 904168728 in words is "nine hundred four million, one hundred sixty-eight thousand, seven hundred twenty-eight".