22938281 has 2 divisors, whose sum is σ = 22938282. Its totient is φ = 22938280.

The previous prime is 22938247. The next prime is 22938317. The reversal of 22938281 is 18283922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20394256 + 2544025 = 4516^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 22938281 - 2¹⁴ = 22921897 is a prime.

It is a super-2 number, since 2×22938281² = 1052329470469922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22938781) 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 as a sum of consecutive naturals, namely, 11469140 + 11469141.

It is an arithmetic number, because the mean of its divisors is an integer number (11469141).

Almost surely, 2^22938281 is an apocalyptic number.

It is an amenable number.

22938281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22938281 is an equidigital number, since it uses as much as digits as its factorization.

22938281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 22938281 is about 4789.3925502093. The cubic root of 22938281 is about 284.1320923910.

The spelling of 22938281 in words is "twenty-two million, nine hundred thirty-eight thousand, two hundred eighty-one".