904788 has 36 divisors (see below), whose sum is σ = 2346708. Its totient is φ = 293760.

The previous prime is 904781. The next prime is 904789. The reversal of 904788 is 887409.

904788 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in 2 ways, for example, as 17424 + 887364 = 132^2 + 942^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904781) by changing a digit.

904788 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 1170 + ... + 1782.

2⁹⁰⁴⁷⁸⁸ 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 904788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173354).

904788 is an abundant number, since it is smaller than the sum of its proper divisors (1441920).

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

904788 is a wasteful number, since it uses less digits than its factorization.

904788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 904788 is about 951.2034482696. The cubic root of 904788 is about 96.7198491871.

The spelling of 904788 in words is "nine hundred four thousand, seven hundred eighty-eight".