402440104 has 16 divisors (see below), whose sum is σ = 823173120. Its totient is φ = 182927280.

The previous prime is 402440081. The next prime is 402440113. The reversal of 402440104 is 401044204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286504 + ... + 2286679.

It is an arithmetic number, because the mean of its divisors is an integer number (51448320).

Almost surely, 2^402440104 is an apocalyptic number.

402440104 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402440104 is an abundant number, since it is smaller than the sum of its proper divisors (420733016).

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

402440104 is a wasteful number, since it uses less digits than its factorization.

402440104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573200 (or 4573196 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 402440104 is about 20060.9098497551. The cubic root of 402440104 is about 738.3015001327.

Adding to 402440104 its reverse (401044204), we get a palindrome (803484308).

The spelling of 402440104 in words is "four hundred two million, four hundred forty thousand, one hundred four".