22505234 has 16 divisors (see below), whose sum is σ = 35704800. Its totient is φ = 10609344.

The previous prime is 22505207. The next prime is 22505239. The reversal of 22505234 is 43250522.

It is not an unprimeable number, because it can be changed into a prime (22505239) 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, 7322 + ... + 9930.

It is an arithmetic number, because the mean of its divisors is an integer number (2231550).

Almost surely, 2^22505234 is an apocalyptic number.

22505234 is a deficient number, since it is larger than the sum of its proper divisors (13199566).

22505234 is a wasteful number, since it uses less digits than its factorization.

22505234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22505234 is about 4743.9681702136. The cubic root of 22505234 is about 282.3326975563.

Adding to 22505234 its reverse (43250522), we get a palindrome (65755756).

The spelling of 22505234 in words is "twenty-two million, five hundred five thousand, two hundred thirty-four".