22290664 has 32 divisors (see below), whose sum is σ = 45777600. Its totient is φ = 10091520.

The previous prime is 22290661. The next prime is 22290679. The reversal of 22290664 is 46609222.

It is not an unprimeable number, because it can be changed into a prime (22290661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38344 + ... + 38920.

It is an arithmetic number, because the mean of its divisors is an integer number (1430550).

Almost surely, 2^22290664 is an apocalyptic number.

It is an amenable number.

22290664 is an abundant number, since it is smaller than the sum of its proper divisors (23486936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22290664 is a wasteful number, since it uses less digits than its factorization.

22290664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 22290664 is about 4721.2989737995. The cubic root of 22290664 is about 281.4325561131.

Adding to 22290664 its reverse (46609222), we get a palindrome (68899886).

The spelling of 22290664 in words is "twenty-two million, two hundred ninety thousand, six hundred sixty-four".