286347222 has 24 divisors (see below), whose sum is σ = 709050576. Its totient is φ = 81813456.

The previous prime is 286347209. The next prime is 286347223. The reversal of 286347222 is 222743682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286347223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1136173 + ... + 1136424.

It is an arithmetic number, because the mean of its divisors is an integer number (29543774).

Almost surely, 2^286347222 is an apocalyptic number.

286347222 is an abundant number, since it is smaller than the sum of its proper divisors (422703354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

286347222 is a wasteful number, since it uses less digits than its factorization.

286347222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272612 (or 2272609 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 286347222 is about 16921.7972449737. The cubic root of 286347222 is about 659.1197493852.

The spelling of 286347222 in words is "two hundred eighty-six million, three hundred forty-seven thousand, two hundred twenty-two".