816927286 has 16 divisors (see below), whose sum is σ = 1402329600. Its totient is φ = 349641000.

The previous prime is 816927281. The next prime is 816927341. The reversal of 816927286 is 682729618.

It is a super-2 number, since 2×816927286² = 1334740381222651592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816927281) 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 7 ways as a sum of consecutive naturals, for example, 28336 + ... + 49363.

It is an arithmetic number, because the mean of its divisors is an integer number (87645600).

Almost surely, 2^816927286 is an apocalyptic number.

816927286 is a deficient number, since it is larger than the sum of its proper divisors (585402314).

816927286 is a wasteful number, since it uses less digits than its factorization.

816927286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78459.

The product of its digits is 580608, while the sum is 49.

The square root of 816927286 is about 28581.9398571895. The cubic root of 816927286 is about 934.8195810386.

The spelling of 816927286 in words is "eight hundred sixteen million, nine hundred twenty-seven thousand, two hundred eighty-six".