22646444 has 24 divisors (see below), whose sum is σ = 41948928. Its totient is φ = 10675280.

The previous prime is 22646417. The next prime is 22646447. The reversal of 22646444 is 44464622.

It is a super-2 number, since 2×22646444² = 1025722851690272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22646444.

It is not an unprimeable number, because it can be changed into a prime (22646447) 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 7 ways as a sum of consecutive naturals, for example, 4799 + ... + 8265.

It is an arithmetic number, because the mean of its divisors is an integer number (1747872).

Almost surely, 2^22646444 is an apocalyptic number.

It is an amenable number.

22646444 is a deficient number, since it is larger than the sum of its proper divisors (19302484).

22646444 is a wasteful number, since it uses less digits than its factorization.

22646444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3563 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 22646444 is about 4758.8280069782. The cubic root of 22646444 is about 282.9219694386.

The spelling of 22646444 in words is "twenty-two million, six hundred forty-six thousand, four hundred forty-four".