22249664 has 14 divisors (see below), whose sum is σ = 44151804. Its totient is φ = 11124800.

The previous prime is 22249649. The next prime is 22249673. The reversal of 22249664 is 46694222.

It is a super-2 number, since 2×22249664² = 990095096225792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173762 + ... + 173889.

Almost surely, 2^22249664 is an apocalyptic number.

It is an amenable number.

22249664 is a deficient number, since it is larger than the sum of its proper divisors (21902140).

22249664 is an equidigital number, since it uses as much as digits as its factorization.

22249664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347663 (or 347653 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 22249664 is about 4716.9549499651. The cubic root of 22249664 is about 281.2599006227.

The spelling of 22249664 in words is "twenty-two million, two hundred forty-nine thousand, six hundred sixty-four".