22109644 has 6 divisors (see below), whose sum is σ = 38691884. Its totient is φ = 11054820.

The previous prime is 22109641. The next prime is 22109653. The reversal of 22109644 is 44690122.

It is not an unprimeable number, because it can be changed into a prime (22109641) 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 as a sum of consecutive naturals, namely, 2763702 + ... + 2763709.

Almost surely, 2^22109644 is an apocalyptic number.

It is an amenable number.

22109644 is a deficient number, since it is larger than the sum of its proper divisors (16582240).

22109644 is a wasteful number, since it uses less digits than its factorization.

22109644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527415 (or 5527413 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 22109644 is about 4702.0893228436. The cubic root of 22109644 is about 280.6686570373.

Adding to 22109644 its reverse (44690122), we get a palindrome (66799766).

The spelling of 22109644 in words is "twenty-two million, one hundred nine thousand, six hundred forty-four".