22788645 has 16 divisors (see below), whose sum is σ = 39776832. Its totient is φ = 11048960.

The previous prime is 22788637. The next prime is 22788659. The reversal of 22788645 is 54688722.

It is a happy number.

It is not a de Polignac number, because 22788645 - 2³ = 22788637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22788597 and 22788606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68892 + ... + 69221.

It is an arithmetic number, because the mean of its divisors is an integer number (2486052).

Almost surely, 2^22788645 is an apocalyptic number.

It is an amenable number.

22788645 is a deficient number, since it is larger than the sum of its proper divisors (16988187).

22788645 is a wasteful number, since it uses less digits than its factorization.

22788645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138132.

The product of its digits is 215040, while the sum is 42.

The square root of 22788645 is about 4773.7453849153. The cubic root of 22788645 is about 283.5129065414.

The spelling of 22788645 in words is "twenty-two million, seven hundred eighty-eight thousand, six hundred forty-five".