22166827 has 4 divisors (see below), whose sum is σ = 23470776. Its totient is φ = 20862880.

The previous prime is 22166819. The next prime is 22166843. The reversal of 22166827 is 72866122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22166827 - 2³ = 22166819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22166792 and 22166801.

It is not an unprimeable number, because it can be changed into a prime (22166327) by changing a digit.

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, 651949 + ... + 651982.

It is an arithmetic number, because the mean of its divisors is an integer number (5867694).

Almost surely, 2^22166827 is an apocalyptic number.

22166827 is a deficient number, since it is larger than the sum of its proper divisors (1303949).

22166827 is a wasteful number, since it uses less digits than its factorization.

22166827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303948.

The product of its digits is 16128, while the sum is 34.

The square root of 22166827 is about 4708.1659911265. The cubic root of 22166827 is about 280.9104166846.

The spelling of 22166827 in words is "twenty-two million, one hundred sixty-six thousand, eight hundred twenty-seven".