904816 has 40 divisors (see below), whose sum is σ = 1968624. Its totient is φ = 399360.

The previous prime is 904811. The next prime is 904823. The reversal of 904816 is 618409.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9280 + ... + 9376.

2⁹⁰⁴⁸¹⁶ 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 904816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984312).

904816 is an abundant number, since it is smaller than the sum of its proper divisors (1063808).

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

904816 is a wasteful number, since it uses less digits than its factorization.

904816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 904816 is about 951.2181663530. The cubic root of 904816 is about 96.7208468896.

The spelling of 904816 in words is "nine hundred four thousand, eight hundred sixteen".