2404404 has 60 divisors (see below), whose sum is σ = 6474468. Its totient is φ = 777600.

The previous prime is 2404399. The next prime is 2404411. The reversal of 2404404 is 4044042.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63504 + 2340900 = 252^2 + 1530^2 .

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 19 ways as a sum of consecutive naturals, for example, 13194 + ... + 13374.

2^2404404 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 2404404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3237234).

2404404 is an abundant number, since it is smaller than the sum of its proper divisors (4070064).

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

2404404 is a wasteful number, since it uses less digits than its factorization.

2404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 2404404 is about 1550.6140719083. The cubic root of 2404404 is about 133.9684339399.

Adding to 2404404 its reverse (4044042), we get a palindrome (6448446).

It can be divided in two parts, 2 and 404404, that multiplied together give a palindrome (808808).

The spelling of 2404404 in words is "two million, four hundred four thousand, four hundred four".