22042004 has 12 divisors (see below), whose sum is σ = 40250784. Its totient is φ = 10541784.

The previous prime is 22042003. The next prime is 22042019. The reversal of 22042004 is 40024022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22042004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119702 + ... + 119885.

It is an arithmetic number, because the mean of its divisors is an integer number (3354232).

Almost surely, 2^22042004 is an apocalyptic number.

It is an amenable number.

22042004 is a deficient number, since it is larger than the sum of its proper divisors (18208780).

22042004 is a wasteful number, since it uses less digits than its factorization.

22042004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239614 (or 239612 counting only the distinct ones).

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

The square root of 22042004 is about 4694.8912660465. The cubic root of 22042004 is about 280.3821482690.

Adding to 22042004 its reverse (40024022), we get a palindrome (62066026).

It can be divided in two parts, 220 and 42004, that added together give a palindrome (42224).

The spelling of 22042004 in words is "twenty-two million, forty-two thousand, four".