22628865 has 32 divisors (see below), whose sum is σ = 42068736. Its totient is φ = 10172160.

The previous prime is 22628863. The next prime is 22628897. The reversal of 22628865 is 56882622.

It is not a de Polignac number, because 22628865 - 2¹ = 22628863 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22628861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4639 + ... + 8171.

It is an arithmetic number, because the mean of its divisors is an integer number (1314648).

Almost surely, 2^22628865 is an apocalyptic number.

It is an amenable number.

22628865 is a deficient number, since it is larger than the sum of its proper divisors (19439871).

22628865 is a wasteful number, since it uses less digits than its factorization.

22628865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609.

The product of its digits is 92160, while the sum is 39.

The square root of 22628865 is about 4756.9806600406. The cubic root of 22628865 is about 282.8487456877.

The spelling of 22628865 in words is "twenty-two million, six hundred twenty-eight thousand, eight hundred sixty-five".