91516740 has 96 divisors (see below), whose sum is σ = 294631680. Its totient is φ = 20791296.

The previous prime is 91516709. The next prime is 91516741. The reversal of 91516740 is 4761519.

It is not an unprimeable number, because it can be changed into a prime (91516741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80496 + ... + 81624.

It is an arithmetic number, because the mean of its divisors is an integer number (3069080).

Almost surely, 2^91516740 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 91516740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147315840).

91516740 is an abundant number, since it is smaller than the sum of its proper divisors (203114940).

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

91516740 is a wasteful number, since it uses less digits than its factorization.

91516740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 91516740 is about 9566.4382086543. The cubic root of 91516740 is about 450.6439176668.

The spelling of 91516740 in words is "ninety-one million, five hundred sixteen thousand, seven hundred forty".