22788637 has 2 divisors, whose sum is σ = 22788638. Its totient is φ = 22788636.

The previous prime is 22788617. The next prime is 22788659. The reversal of 22788637 is 73688722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 9400356 = 3659^2 + 3066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22788637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22788593 and 22788602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22788617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11394318 + 11394319.

It is an arithmetic number, because the mean of its divisors is an integer number (11394319).

Almost surely, 2^22788637 is an apocalyptic number.

It is an amenable number.

22788637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22788637 is an equidigital number, since it uses as much as digits as its factorization.

22788637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 22788637 is about 4773.7445469987. The cubic root of 22788637 is about 283.5128733655.

The spelling of 22788637 in words is "twenty-two million, seven hundred eighty-eight thousand, six hundred thirty-seven".