22006642 has 16 divisors (see below), whose sum is σ = 37889280. Its totient is φ = 9390528.

The previous prime is 22006639. The next prime is 22006657. The reversal of 22006642 is 24660022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6634.

It is an arithmetic number, because the mean of its divisors is an integer number (2368080).

Almost surely, 2^22006642 is an apocalyptic number.

22006642 is a deficient number, since it is larger than the sum of its proper divisors (15882638).

22006642 is a wasteful number, since it uses less digits than its factorization.

22006642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22006642 is about 4691.1237459696. The cubic root of 22006642 is about 280.2321289331.

Adding to 22006642 its reverse (24660022), we get a palindrome (46666664).

The spelling of 22006642 in words is "twenty-two million, six thousand, six hundred forty-two".