22117204 has 24 divisors (see below), whose sum is σ = 41986728. Its totient is φ = 10152960.

The previous prime is 22117171. The next prime is 22117211. The reversal of 22117204 is 40271122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 476100 + 21641104 = 690^2 + 4652^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179 + ... + 6754.

It is an arithmetic number, because the mean of its divisors is an integer number (1749447).

Almost surely, 2^22117204 is an apocalyptic number.

It is an amenable number.

22117204 is a deficient number, since it is larger than the sum of its proper divisors (19869524).

22117204 is a wasteful number, since it uses less digits than its factorization.

22117204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995 (or 7993 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 22117204 is about 4702.8931520927. The cubic root of 22117204 is about 280.7006432790.

Adding to 22117204 its reverse (40271122), we get a palindrome (62388326).

The spelling of 22117204 in words is "twenty-two million, one hundred seventeen thousand, two hundred four".