91244286 has 64 divisors (see below), whose sum is σ = 233088000. Its totient is φ = 25917408.

The previous prime is 91244269. The next prime is 91244297. The reversal of 91244286 is 68244219.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91244286.

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, 74616 + ... + 75828.

It is an arithmetic number, because the mean of its divisors is an integer number (3642000).

Almost surely, 2^91244286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91244286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116544000).

91244286 is an abundant number, since it is smaller than the sum of its proper divisors (141843714).

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

91244286 is a wasteful number, since it uses less digits than its factorization.

91244286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430 (or 1424 counting only the distinct ones).

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

The square root of 91244286 is about 9552.1874981598. The cubic root of 91244286 is about 450.1962699389.

The spelling of 91244286 in words is "ninety-one million, two hundred forty-four thousand, two hundred eighty-six".