22288913 has 2 divisors, whose sum is σ = 22288914. Its totient is φ = 22288912.

The previous prime is 22288897. The next prime is 22288927. The reversal of 22288913 is 31988222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 10647169 = 3412^2 + 3263^2 .

It is a cyclic number.

It is not a de Polignac number, because 22288913 - 2⁴ = 22288897 is a prime.

It is not a weakly prime, because it can be changed into another prime (22288943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144456 + 11144457.

It is an arithmetic number, because the mean of its divisors is an integer number (11144457).

Almost surely, 2^22288913 is an apocalyptic number.

It is an amenable number.

22288913 is a deficient number, since it is larger than the sum of its proper divisors (1).

22288913 is an equidigital number, since it uses as much as digits as its factorization.

22288913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 22288913 is about 4721.1135339028. The cubic root of 22288913 is about 281.4251867900.

The spelling of 22288913 in words is "twenty-two million, two hundred eighty-eight thousand, nine hundred thirteen".