22130872 has 16 divisors (see below), whose sum is σ = 43936560. Its totient is φ = 10414464.

The previous prime is 22130863. The next prime is 22130879. The reversal of 22130872 is 27803122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22130879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81228 + ... + 81499.

It is an arithmetic number, because the mean of its divisors is an integer number (2746035).

Almost surely, 2^22130872 is an apocalyptic number.

It is an amenable number.

22130872 is a deficient number, since it is larger than the sum of its proper divisors (21805688).

22130872 is a wasteful number, since it uses less digits than its factorization.

22130872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162750 (or 162746 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22130872 is about 4704.3460757049. The cubic root of 22130872 is about 280.7584538766.

Adding to 22130872 its reverse (27803122), we get a palindrome (49933994).

The spelling of 22130872 in words is "twenty-two million, one hundred thirty thousand, eight hundred seventy-two".