22163204 has 12 divisors (see below), whose sum is σ = 44326464. Its totient is φ = 9498504.

The previous prime is 22163201. The next prime is 22163261. The reversal of 22163204 is 40236122.

22163204 is an admirable number.

It is a super-2 number, since 2×22163204² = 982415223091232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22163201) 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, 395744 + ... + 395799.

It is an arithmetic number, because the mean of its divisors is an integer number (3693872).

Almost surely, 2^22163204 is an apocalyptic number.

It is an amenable number.

22163204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22163204 is a wasteful number, since it uses less digits than its factorization.

22163204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791554 (or 791552 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22163204 is about 4707.7812183660. The cubic root of 22163204 is about 280.8951116240.

Adding to 22163204 its reverse (40236122), we get a palindrome (62399326).

The spelling of 22163204 in words is "twenty-two million, one hundred sixty-three thousand, two hundred four".