22088705 has 12 divisors (see below), whose sum is σ = 26906940. Its totient is φ = 17407872.

The previous prime is 22088701. The next prime is 22088711. The reversal of 22088705 is 50788022.

It can be written as a sum of positive squares in 6 ways, for example, as 26896 + 22061809 = 164^2 + 4697^2 .

It is not a de Polignac number, because 22088705 - 2² = 22088701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22088701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26231 + ... + 27059.

It is an arithmetic number, because the mean of its divisors is an integer number (2242245).

Almost surely, 2^22088705 is an apocalyptic number.

It is an amenable number.

22088705 is a deficient number, since it is larger than the sum of its proper divisors (4818235).

22088705 is an frugal number, since it uses more digits than its factorization.

22088705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 22088705 is about 4699.8622320234. The cubic root of 22088705 is about 280.5800263740.

The spelling of 22088705 in words is "twenty-two million, eighty-eight thousand, seven hundred five".