491222286 has 64 divisors (see below), whose sum is σ = 1145180160. Its totient is φ = 155895840.

The previous prime is 491222267. The next prime is 491222297. The reversal of 491222286 is 682222194.

It is a self number, because there is not a number n which added to its sum of digits gives 491222286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91291 + ... + 96521.

It is an arithmetic number, because the mean of its divisors is an integer number (17893440).

Almost surely, 2^491222286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491222286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572590080).

491222286 is an abundant number, since it is smaller than the sum of its proper divisors (653957874).

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

491222286 is a wasteful number, since it uses less digits than its factorization.

491222286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326 (or 5320 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 491222286 is about 22163.5350519722. The cubic root of 491222286 is about 789.0284943952.

The spelling of 491222286 in words is "four hundred ninety-one million, two hundred twenty-two thousand, two hundred eighty-six".