22705243 has 4 divisors (see below), whose sum is σ = 24769368. Its totient is φ = 20641120.

The previous prime is 22705223. The next prime is 22705261. The reversal of 22705243 is 34250722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22705243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22705213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032046 + ... + 1032067.

It is an arithmetic number, because the mean of its divisors is an integer number (6192342).

Almost surely, 2^22705243 is an apocalyptic number.

22705243 is a deficient number, since it is larger than the sum of its proper divisors (2064125).

22705243 is a wasteful number, since it uses less digits than its factorization.

22705243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064124.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22705243 is about 4765.0018887719. The cubic root of 22705243 is about 283.1666164153.

Adding to 22705243 its reverse (34250722), we get a palindrome (56955965).

The spelling of 22705243 in words is "twenty-two million, seven hundred five thousand, two hundred forty-three".