404240022 has 24 divisors (see below), whose sum is σ = 899526576. Its totient is φ = 131104656.

The previous prime is 404240017. The next prime is 404240027. The reversal of 404240022 is 220042404.

404240022 is a `hidden beast` number, since 404 + 240 + 0 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (404240017) and next prime (404240027).

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

It is a junction number, because it is equal to n+sod(n) for n = 404239977 and 404240004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404240027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 302818 + ... + 304149.

It is an arithmetic number, because the mean of its divisors is an integer number (37480274).

Almost surely, 2^404240022 is an apocalyptic number.

404240022 is an abundant number, since it is smaller than the sum of its proper divisors (495286554).

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

404240022 is a wasteful number, since it uses less digits than its factorization.

404240022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607012 (or 607009 counting only the distinct ones).

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

The square root of 404240022 is about 20105.7211260875. The cubic root of 404240022 is about 739.4005505731.

Adding to 404240022 its reverse (220042404), we get a palindrome (624282426).

The spelling of 404240022 in words is "four hundred four million, two hundred forty thousand, twenty-two".