22091204 has 6 divisors (see below), whose sum is σ = 38659614. Its totient is φ = 11045600.

The previous prime is 22091203. The next prime is 22091213. The reversal of 22091204 is 40219022.

It can be written as a sum of positive squares in only one way, i.e., 16321600 + 5769604 = 4040^2 + 2402^2 .

It is not an unprimeable number, because it can be changed into a prime (22091203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2761397 + ... + 2761404.

It is an arithmetic number, because the mean of its divisors is an integer number (6443269).

Almost surely, 2^22091204 is an apocalyptic number.

It is an amenable number.

22091204 is a deficient number, since it is larger than the sum of its proper divisors (16568410).

22091204 is a wasteful number, since it uses less digits than its factorization.

22091204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522805 (or 5522803 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22091204 is about 4700.1280833611. The cubic root of 22091204 is about 280.5906070915.

The spelling of 22091204 in words is "twenty-two million, ninety-one thousand, two hundred four".