22304865 has 16 divisors (see below), whose sum is σ = 38932416. Its totient is φ = 10814400.

The previous prime is 22304819. The next prime is 22304869. The reversal of 22304865 is 56840322.

It is not a de Polignac number, because 22304865 - 2¹² = 22300769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22304869) 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, 67426 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (2433276).

Almost surely, 2^22304865 is an apocalyptic number.

It is an amenable number.

22304865 is a deficient number, since it is larger than the sum of its proper divisors (16627551).

22304865 is a wasteful number, since it uses less digits than its factorization.

22304865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135200.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 22304865 is about 4722.8026636733. The cubic root of 22304865 is about 281.4923087118.

The spelling of 22304865 in words is "twenty-two million, three hundred four thousand, eight hundred sixty-five".