904890720 has 96 divisors (see below), whose sum is σ = 2855381760. Its totient is φ = 240883200.

The previous prime is 904890719. The next prime is 904890769. The reversal of 904890720 is 27098409.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353445 + ... + 355995.

It is an arithmetic number, because the mean of its divisors is an integer number (29743560).

Almost surely, 2^904890720 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 904890720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427690880).

904890720 is an abundant number, since it is smaller than the sum of its proper divisors (1950491040).

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

904890720 is a wasteful number, since it uses less digits than its factorization.

904890720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308 (or 3300 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 904890720 is about 30081.4015630921. The cubic root of 904890720 is about 967.2350922937.

The spelling of 904890720 in words is "nine hundred four million, eight hundred ninety thousand, seven hundred twenty".