22727243 has 32 divisors (see below), whose sum is σ = 30385152. Its totient is φ = 16473600.

The previous prime is 22727239. The next prime is 22727251. The reversal of 22727243 is 34272722.

It is a happy number.

It is not a de Polignac number, because 22727243 - 2² = 22727239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22727203) 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 31 ways as a sum of consecutive naturals, for example, 72455 + ... + 72767.

It is an arithmetic number, because the mean of its divisors is an integer number (949536).

Almost surely, 2^22727243 is an apocalyptic number.

22727243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22727243 is a deficient number, since it is larger than the sum of its proper divisors (7657909).

22727243 is a wasteful number, since it uses less digits than its factorization.

22727243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its digits is 9408, while the sum is 29.

The square root of 22727243 is about 4767.3098284043. The cubic root of 22727243 is about 283.2580439707.

Adding to 22727243 its reverse (34272722), we get a palindrome (56999965).

The spelling of 22727243 in words is "twenty-two million, seven hundred twenty-seven thousand, two hundred forty-three".