22244642 has 8 divisors (see below), whose sum is σ = 38133696. Its totient is φ = 9533412.

The previous prime is 22244641. The next prime is 22244681. The reversal of 22244642 is 24644222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22244641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 794438 + ... + 794465.

It is an arithmetic number, because the mean of its divisors is an integer number (4766712).

Almost surely, 2^22244642 is an apocalyptic number.

22244642 is a deficient number, since it is larger than the sum of its proper divisors (15889054).

22244642 is a wasteful number, since it uses less digits than its factorization.

22244642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588912.

The product of its digits is 6144, while the sum is 26.

The square root of 22244642 is about 4716.4225849684. The cubic root of 22244642 is about 281.2387378536.

Adding to 22244642 its reverse (24644222), we get a palindrome (46888864).

The spelling of 22244642 in words is "twenty-two million, two hundred forty-four thousand, six hundred forty-two".