22352644 has 12 divisors (see below), whose sum is σ = 39855564. Its totient is φ = 10965344.

The previous prime is 22352623. The next prime is 22352651. The reversal of 22352644 is 44625322.

It can be written as a sum of positive squares in 2 ways, for example, as 7236100 + 15116544 = 2690^2 + 3888^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52507 + ... + 52930.

It is an arithmetic number, because the mean of its divisors is an integer number (3321297).

Almost surely, 2^22352644 is an apocalyptic number.

It is an amenable number.

22352644 is a deficient number, since it is larger than the sum of its proper divisors (17502920).

22352644 is a wasteful number, since it uses less digits than its factorization.

22352644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105494 (or 105492 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 22352644 is about 4727.8582889084. The cubic root of 22352644 is about 281.6931592010.

Adding to 22352644 its reverse (44625322), we get a palindrome (66977966).

The spelling of 22352644 in words is "twenty-two million, three hundred fifty-two thousand, six hundred forty-four".