286642222 has 12 divisors (see below), whose sum is σ = 431650080. Its totient is φ = 142760436.

The previous prime is 286642201. The next prime is 286642229. The reversal of 286642222 is 222246682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286642229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 523753 + ... + 524299.

It is an arithmetic number, because the mean of its divisors is an integer number (35970840).

Almost surely, 2^286642222 is an apocalyptic number.

286642222 is a deficient number, since it is larger than the sum of its proper divisors (145007858).

286642222 is an frugal number, since it uses more digits than its factorization.

286642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1028 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 286642222 is about 16930.5115693531. The cubic root of 286642222 is about 659.3460173300.

The spelling of 286642222 in words is "two hundred eighty-six million, six hundred forty-two thousand, two hundred twenty-two".