22813172 has 6 divisors (see below), whose sum is σ = 39923058. Its totient is φ = 11406584.

The previous prime is 22813121. The next prime is 22813181. The reversal of 22813172 is 27131822.

It can be written as a sum of positive squares in only one way, i.e., 19412836 + 3400336 = 4406^2 + 1844^2 .

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 as a sum of consecutive naturals, namely, 2851643 + ... + 2851650.

It is an arithmetic number, because the mean of its divisors is an integer number (6653843).

Almost surely, 2^22813172 is an apocalyptic number.

It is an amenable number.

22813172 is a deficient number, since it is larger than the sum of its proper divisors (17109886).

22813172 is a wasteful number, since it uses less digits than its factorization.

22813172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703297 (or 5703295 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 22813172 is about 4776.3136412928. The cubic root of 22813172 is about 283.6145833170.

Adding to 22813172 its reverse (27131822), we get a palindrome (49944994).

The spelling of 22813172 in words is "twenty-two million, eight hundred thirteen thousand, one hundred seventy-two".