1504404 has 72 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 436800.

The previous prime is 1504379. The next prime is 1504409. The reversal of 1504404 is 4044051.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1504409) 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 23 ways as a sum of consecutive naturals, for example, 11419 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2^1504404 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 1504404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2162160).

1504404 is an abundant number, since it is smaller than the sum of its proper divisors (2819916).

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

1504404 is a wasteful number, since it uses less digits than its factorization.

1504404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1504404 is about 1226.5414791192. The cubic root of 1504404 is about 114.5833441616.

Adding to 1504404 its reverse (4044051), we get a palindrome (5548455).

It can be divided in two parts, 150 and 4404, that added together give a palindrome (4554).

The spelling of 1504404 in words is "one million, five hundred four thousand, four hundred four".