22297709 has 8 divisors (see below), whose sum is σ = 25670208. Its totient is φ = 18972000.

The previous prime is 22297703. The next prime is 22297721. The reversal of 22297709 is 90779222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22297709 - 2¹⁶ = 22232173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22297703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10667 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (3208776).

Almost surely, 2^22297709 is an apocalyptic number.

It is an amenable number.

22297709 is a deficient number, since it is larger than the sum of its proper divisors (3372499).

22297709 is a wasteful number, since it uses less digits than its factorization.

22297709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23395.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 22297709 is about 4722.0450019033. The cubic root of 22297709 is about 281.4622020598.

The spelling of 22297709 in words is "twenty-two million, two hundred ninety-seven thousand, seven hundred nine".