404022 has 24 divisors (see below), whose sum is σ = 862056. Its totient is φ = 126208.

The previous prime is 404021. The next prime is 404029. The reversal of 404022 is 220404.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 403989 and 404007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021) 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, 1618 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (35919).

2⁴⁰⁴⁰²² is an apocalyptic number.

404022 is an abundant number, since it is smaller than the sum of its proper divisors (458034).

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

404022 is a wasteful number, since it uses less digits than its factorization.

404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 404022 is about 635.6272492586. The cubic root of 404022 is about 73.9267597733.

Adding to 404022 its reverse (220404), we get a palindrome (624426).

It can be divided in two parts, 40402 and 2, that added together give a palindrome (40404).

The spelling of 404022 in words is "four hundred four thousand, twenty-two", and thus it is an iban number.