22142786 has 8 divisors (see below), whose sum is σ = 33270204. Its totient is φ = 11052720.

The previous prime is 22142749. The next prime is 22142797. The reversal of 22142786 is 68724122.

It can be written as a sum of positive squares in 2 ways, for example, as 21298225 + 844561 = 4615^2 + 919^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 7805 + ... + 10256.

Almost surely, 2^22142786 is an apocalyptic number.

22142786 is a deficient number, since it is larger than the sum of its proper divisors (11127418).

22142786 is a wasteful number, since it uses less digits than its factorization.

22142786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18676.

The product of its digits is 10752, while the sum is 32.

The square root of 22142786 is about 4705.6121812151. The cubic root of 22142786 is about 280.8088262878.

The spelling of 22142786 in words is "twenty-two million, one hundred forty-two thousand, seven hundred eighty-six".