1040904 has 64 divisors (see below), whose sum is σ = 2976000. Its totient is φ = 336960.

The previous prime is 1040899. The next prime is 1040929. The reversal of 1040904 is 4090401.

It is a super-2 number, since 2×1040904² = 2166962274432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13137 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (46500).

2^1040904 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 1040904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488000).

1040904 is an abundant number, since it is smaller than the sum of its proper divisors (1935096).

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

1040904 is a wasteful number, since it uses less digits than its factorization.

1040904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1040904 is about 1020.2470289102. The cubic root of 1040904 is about 101.3452875248.

The spelling of 1040904 in words is "one million, forty thousand, nine hundred four".