404040260 has 48 divisors (see below), whose sum is σ = 929275200. Its totient is φ = 146649984.

The previous prime is 404040227. The next prime is 404040269. The reversal of 404040260 is 62040404.

404040260 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (404040269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2171 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (19359900).

Almost surely, 2^404040260 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 404040260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464637600).

404040260 is an abundant number, since it is smaller than the sum of its proper divisors (525234940).

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

404040260 is a wasteful number, since it uses less digits than its factorization.

404040260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26420 (or 26418 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404040260 is about 20100.7527222241. The cubic root of 404040260 is about 739.2787347693.

Adding to 404040260 its reverse (62040404), we get a palindrome (466080664).

The spelling of 404040260 in words is "four hundred four million, forty thousand, two hundred sixty".