22344642 has 12 divisors (see below), whose sum is σ = 48413430. Its totient is φ = 7448208.

The previous prime is 22344617. The next prime is 22344653. The reversal of 22344642 is 24644322.

It can be written as a sum of positive squares in only one way, i.e., 20331081 + 2013561 = 4509^2 + 1419^2 .

It is a super-2 number, since 2×22344642² = 998566052216328, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 620667 + ... + 620702.

Almost surely, 2^22344642 is an apocalyptic number.

22344642 is an abundant number, since it is smaller than the sum of its proper divisors (26068788).

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

22344642 is a wasteful number, since it uses less digits than its factorization.

22344642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241377 (or 1241374 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 22344642 is about 4727.0119525975. The cubic root of 22344642 is about 281.6595408411.

Adding to 22344642 its reverse (24644322), we get a palindrome (46988964).

The spelling of 22344642 in words is "twenty-two million, three hundred forty-four thousand, six hundred forty-two".