91073536 has 88 divisors (see below), whose sum is σ = 199132160. Its totient is φ = 41472000.

The previous prime is 91073531. The next prime is 91073561. The reversal of 91073536 is 63537019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91073531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603061 + ... + 603211.

Almost surely, 2^91073536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91073536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99566080).

91073536 is an abundant number, since it is smaller than the sum of its proper divisors (108058624).

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

91073536 is a wasteful number, since it uses less digits than its factorization.

91073536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 91073536 is about 9543.2455695115. The cubic root of 91073536 is about 449.9152696439.

The spelling of 91073536 in words is "ninety-one million, seventy-three thousand, five hundred thirty-six".