22709345 has 16 divisors (see below), whose sum is σ = 27782352. Its totient is φ = 17817600.

The previous prime is 22709341. The next prime is 22709353. The reversal of 22709345 is 54390722.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 118336 + 22591009 = 344^2 + 4753^2 .

It is not a de Polignac number, because 22709345 - 2² = 22709341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22709341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97349 + ... + 97581.

It is an arithmetic number, because the mean of its divisors is an integer number (1736397).

Almost surely, 2^22709345 is an apocalyptic number.

It is an amenable number.

22709345 is a deficient number, since it is larger than the sum of its proper divisors (5073007).

22709345 is a wasteful number, since it uses less digits than its factorization.

22709345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 22709345 is about 4765.4322993827. The cubic root of 22709345 is about 283.1836679765.

The spelling of 22709345 in words is "twenty-two million, seven hundred nine thousand, three hundred forty-five".