22142804 has 12 divisors (see below), whose sum is σ = 40000128. Its totient is φ = 10714200.

The previous prime is 22142803. The next prime is 22142833. The reversal of 22142804 is 40824122.

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 22142804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142803) 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, 89162 + ... + 89409.

It is an arithmetic number, because the mean of its divisors is an integer number (3333344).

Almost surely, 2^22142804 is an apocalyptic number.

It is an amenable number.

22142804 is a deficient number, since it is larger than the sum of its proper divisors (17857324).

22142804 is a wasteful number, since it uses less digits than its factorization.

22142804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178606 (or 178604 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 22142804 is about 4705.6140938245. The cubic root of 22142804 is about 280.8089023782.

Adding to 22142804 its reverse (40824122), we get a palindrome (62966926).

The spelling of 22142804 in words is "twenty-two million, one hundred forty-two thousand, eight hundred four".