22116644 has 12 divisors (see below), whose sum is σ = 42222768. Its totient is φ = 10053000.

The previous prime is 22116641. The next prime is 22116683. The reversal of 22116644 is 44661122.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22116641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251282 + ... + 251369.

It is an arithmetic number, because the mean of its divisors is an integer number (3518564).

Almost surely, 2^22116644 is an apocalyptic number.

It is an amenable number.

22116644 is a deficient number, since it is larger than the sum of its proper divisors (20106124).

22116644 is a wasteful number, since it uses less digits than its factorization.

22116644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502666 (or 502664 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 22116644 is about 4702.8336138971. The cubic root of 22116644 is about 280.6982741777.

Adding to 22116644 its reverse (44661122), we get a palindrome (66777766).

The spelling of 22116644 in words is "twenty-two million, one hundred sixteen thousand, six hundred forty-four".