2404440 has 48 divisors (see below), whose sum is σ = 7815600. Its totient is φ = 641088.

The previous prime is 2404421. The next prime is 2404459. The reversal of 2404440 is 444042.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2404421) and next prime (2404459).

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 11 ways as a sum of consecutive naturals, for example, 2980 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (162825).

2^2404440 is an apocalyptic number.

2404440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2404440 is an abundant number, since it is smaller than the sum of its proper divisors (5411160).

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

2404440 is a wasteful number, since it uses less digits than its factorization.

2404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696 (or 6689 counting only the distinct ones).

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

The square root of 2404440 is about 1550.6256801691. The cubic root of 2404440 is about 133.9691025518.

Adding to 2404440 its reverse (444042), we get a palindrome (2848482).

The spelling of 2404440 in words is "two million, four hundred four thousand, four hundred forty".