22768287 has 12 divisors (see below), whose sum is σ = 32249736. Its totient is φ = 14285440.

The previous prime is 22768271. The next prime is 22768301. The reversal of 22768287 is 78286722.

It is not a de Polignac number, because 22768287 - 2⁴ = 22768271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22768237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12264 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (2687478).

Almost surely, 2^22768287 is an apocalyptic number.

22768287 is a deficient number, since it is larger than the sum of its proper divisors (9481449).

22768287 is a wasteful number, since it uses less digits than its factorization.

22768287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26298 (or 26281 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 22768287 is about 4771.6126204880. The cubic root of 22768287 is about 283.4284569494.

The spelling of 22768287 in words is "twenty-two million, seven hundred sixty-eight thousand, two hundred eighty-seven".