22446638 has 16 divisors (see below), whose sum is σ = 36666000. Its totient is φ = 10265472.

The previous prime is 22446629. The next prime is 22446649. The reversal of 22446638 is 83664422.

It is a junction number, because it is equal to n+sod(n) for n = 22446598 and 22446607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9083 + ... + 11286.

It is an arithmetic number, because the mean of its divisors is an integer number (2291625).

Almost surely, 2^22446638 is an apocalyptic number.

22446638 is a deficient number, since it is larger than the sum of its proper divisors (14219362).

22446638 is a wasteful number, since it uses less digits than its factorization.

22446638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20419.

The product of its digits is 55296, while the sum is 35.

The square root of 22446638 is about 4737.7883025733. The cubic root of 22446638 is about 282.0874517097.

The spelling of 22446638 in words is "twenty-two million, four hundred forty-six thousand, six hundred thirty-eight".