22616945 has 16 divisors (see below), whose sum is σ = 29341200. Its totient is φ = 16637184.

The previous prime is 22616941. The next prime is 22616959. The reversal of 22616945 is 54961622.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 73441 + 22543504 = 271^2 + 4748^2 .

It is a cyclic number.

It is not a de Polignac number, because 22616945 - 2² = 22616941 is a prime.

It is a super-2 number, since 2×22616945² = 1023052402266050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22616941) 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 15 ways as a sum of consecutive naturals, for example, 22187 + ... + 23183.

It is an arithmetic number, because the mean of its divisors is an integer number (1833825).

Almost surely, 2^22616945 is an apocalyptic number.

It is an amenable number.

22616945 is a deficient number, since it is larger than the sum of its proper divisors (6724255).

22616945 is a wasteful number, since it uses less digits than its factorization.

22616945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its digits is 25920, while the sum is 35.

The square root of 22616945 is about 4755.7275994321. The cubic root of 22616945 is about 282.7990724168.

It can be divided in two parts, 226 and 16945, that added together give a palindrome (17171).

The spelling of 22616945 in words is "twenty-two million, six hundred sixteen thousand, nine hundred forty-five".