22768539 has 16 divisors (see below), whose sum is σ = 32010240. Its totient is φ = 14374080.

The previous prime is 22768507. The next prime is 22768549. The reversal of 22768539 is 93586722.

It is not a de Polignac number, because 22768539 - 2⁵ = 22768507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22768539.

It is not an unprimeable number, because it can be changed into a prime (22768549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767 + ... + 6975.

It is an arithmetic number, because the mean of its divisors is an integer number (2000640).

Almost surely, 2^22768539 is an apocalyptic number.

22768539 is a deficient number, since it is larger than the sum of its proper divisors (9241701).

22768539 is a wasteful number, since it uses less digits than its factorization.

22768539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290.

The product of its digits is 181440, while the sum is 42.

The square root of 22768539 is about 4771.6390265820. The cubic root of 22768539 is about 283.4295026101.

The spelling of 22768539 in words is "twenty-two million, seven hundred sixty-eight thousand, five hundred thirty-nine".