22705207 has 6 divisors (see below), whose sum is σ = 25963224. Its totient is φ = 19450800.

The previous prime is 22705181. The next prime is 22705213. The reversal of 22705207 is 70250722.

It is not a de Polignac number, because 22705207 - 2¹¹ = 22703159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22705297) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11707 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (4327204).

Almost surely, 2^22705207 is an apocalyptic number.

22705207 is a deficient number, since it is larger than the sum of its proper divisors (3258017).

22705207 is an frugal number, since it uses more digits than its factorization.

22705207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 22705207 is about 4764.9981112273. The cubic root of 22705207 is about 283.1664667582.

Adding to 22705207 its reverse (70250722), we get a palindrome (92955929).

The spelling of 22705207 in words is "twenty-two million, seven hundred five thousand, two hundred seven".