22274289 has 12 divisors (see below), whose sum is σ = 33867600. Its totient is φ = 14067864.

The previous prime is 22274279. The next prime is 22274299. The reversal of 22274289 is 98247222.

It is a happy number.

22274289 is a `hidden beast` number, since 2 + 227 + 428 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (22274279) and next prime (22274299).

It is not a de Polignac number, because 22274289 - 2⁸ = 22274033 is a prime.

It is a super-2 number, since 2×22274289² = 992287900911042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22274279) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 64959 + ... + 65300.

It is an arithmetic number, because the mean of its divisors is an integer number (2822300).

Almost surely, 2^22274289 is an apocalyptic number.

It is an amenable number.

22274289 is a deficient number, since it is larger than the sum of its proper divisors (11593311).

22274289 is a wasteful number, since it uses less digits than its factorization.

22274289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130284 (or 130281 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22274289 is about 4719.5644926201. The cubic root of 22274289 is about 281.3636246082.

The spelling of 22274289 in words is "twenty-two million, two hundred seventy-four thousand, two hundred eighty-nine".