22899172 has 6 divisors (see below), whose sum is σ = 40073558. Its totient is φ = 11449584.

The previous prime is 22899157. The next prime is 22899179. The reversal of 22899172 is 27199822.

It can be written as a sum of positive squares in only one way, i.e., 15413476 + 7485696 = 3926^2 + 2736^2 .

It is not an unprimeable number, because it can be changed into a prime (22899179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2862393 + ... + 2862400.

Almost surely, 2^22899172 is an apocalyptic number.

It is an amenable number.

22899172 is a deficient number, since it is larger than the sum of its proper divisors (17174386).

22899172 is a wasteful number, since it uses less digits than its factorization.

22899172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724797 (or 5724795 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 22899172 is about 4785.3079315756. The cubic root of 22899172 is about 283.9705219685.

The spelling of 22899172 in words is "twenty-two million, eight hundred ninety-nine thousand, one hundred seventy-two".