22287243 has 32 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 13047840.

The previous prime is 22287227. The next prime is 22287257. The reversal of 22287243 is 34278222.

It is not a de Polignac number, because 22287243 - 2⁴ = 22287227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22287243.

It is not an unprimeable number, because it can be changed into a prime (22287203) 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 31 ways as a sum of consecutive naturals, for example, 216330 + ... + 216432.

It is an arithmetic number, because the mean of its divisors is an integer number (1048320).

Almost surely, 2^22287243 is an apocalyptic number.

22287243 is a deficient number, since it is larger than the sum of its proper divisors (11258997).

22287243 is a wasteful number, since it uses less digits than its factorization.

22287243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its digits is 10752, while the sum is 30.

The square root of 22287243 is about 4720.9366655358. The cubic root of 22287243 is about 281.4181580070.

The spelling of 22287243 in words is "twenty-two million, two hundred eighty-seven thousand, two hundred forty-three".