904020 has 96 divisors (see below), whose sum is σ = 2916480. Its totient is φ = 207360.

The previous prime is 904019. The next prime is 904027. The reversal of 904020 is 20409.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904027) 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 31 ways as a sum of consecutive naturals, for example, 14790 + ... + 14850.

It is an arithmetic number, because the mean of its divisors is an integer number (30380).

2⁹⁰⁴⁰²⁰ 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 904020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458240).

904020 is an abundant number, since it is smaller than the sum of its proper divisors (2012460).

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

904020 is a wasteful number, since it uses less digits than its factorization.

904020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 904020 is about 950.7996634413. The cubic root of 904020 is about 96.6924756031.

Adding to 904020 its reverse (20409), we get a palindrome (924429).

The spelling of 904020 in words is "nine hundred four thousand, twenty".