91286850 has 48 divisors (see below), whose sum is σ = 231672672. Its totient is φ = 23775360.

The previous prime is 91286843. The next prime is 91286851. The reversal of 91286850 is 5868219.

It is a junction number, because it is equal to n+sod(n) for n = 91286799 and 91286808.

It is not an unprimeable number, because it can be changed into a prime (91286851) 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 23 ways as a sum of consecutive naturals, for example, 627 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (4826514).

Almost surely, 2^91286850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91286850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115836336).

91286850 is an abundant number, since it is smaller than the sum of its proper divisors (140385822).

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

91286850 is a wasteful number, since it uses less digits than its factorization.

91286850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211 (or 14206 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 91286850 is about 9554.4152097342. The cubic root of 91286850 is about 450.2662621764.

The spelling of 91286850 in words is "ninety-one million, two hundred eighty-six thousand, eight hundred fifty".