904512 has 56 divisors (see below), whose sum is σ = 2739136. Its totient is φ = 258048.

The previous prime is 904511. The next prime is 904513. The reversal of 904512 is 215409.

It is an interprime number because it is at equal distance from previous prime (904511) and next prime (904513).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1008 + ... + 1680.

2⁹⁰⁴⁵¹² 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 904512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369568).

904512 is an abundant number, since it is smaller than the sum of its proper divisors (1834624).

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

904512 is a wasteful number, since it uses less digits than its factorization.

904512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 904512 is about 951.0583578309. The cubic root of 904512 is about 96.7100135891.

The spelling of 904512 in words is "nine hundred four thousand, five hundred twelve".