286166222 has 4 divisors (see below), whose sum is σ = 429249336. Its totient is φ = 143083110.

The previous prime is 286166213. The next prime is 286166227. The reversal of 286166222 is 222661682.

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

It is a super-2 number, since 2×286166222² = 163782213227506568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286166227) 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 as a sum of consecutive naturals, namely, 71541554 + ... + 71541557.

It is an arithmetic number, because the mean of its divisors is an integer number (107312334).

Almost surely, 2^286166222 is an apocalyptic number.

286166222 is a deficient number, since it is larger than the sum of its proper divisors (143083114).

286166222 is a wasteful number, since it uses less digits than its factorization.

286166222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143083113.

The product of its digits is 27648, while the sum is 35.

The square root of 286166222 is about 16916.4482678841. The cubic root of 286166222 is about 658.9808436431.

The spelling of 286166222 in words is "two hundred eighty-six million, one hundred sixty-six thousand, two hundred twenty-two".