404020022 has 16 divisors (see below), whose sum is σ = 693493920. Its totient is φ = 172929408.

The previous prime is 404020021. The next prime is 404020031. The reversal of 404020022 is 220020404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 404019979 and 404020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6947 + ... + 29262.

It is an arithmetic number, because the mean of its divisors is an integer number (43343370).

Almost surely, 2^404020022 is an apocalyptic number.

404020022 is a deficient number, since it is larger than the sum of its proper divisors (289473898).

404020022 is a wasteful number, since it uses less digits than its factorization.

404020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37015.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 404020022 is about 20100.2493019365. The cubic root of 404020022 is about 739.2663913023.

Adding to 404020022 its reverse (220020404), we get a palindrome (624040426).

The spelling of 404020022 in words is "four hundred four million, twenty thousand, twenty-two".