91016744 has 128 divisors (see below), whose sum is σ = 224716800. Its totient is φ = 33592320.

The previous prime is 91016719. The next prime is 91016747. The reversal of 91016744 is 44761019.

91016744 = 436² + 437² + ... + 708².

It is a self number, because there is not a number n which added to its sum of digits gives 91016744.

It is not an unprimeable number, because it can be changed into a prime (91016747) 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 31 ways as a sum of consecutive naturals, for example, 834962 + ... + 835070.

It is an arithmetic number, because the mean of its divisors is an integer number (1755600).

Almost surely, 2^91016744 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 91016744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112358400).

91016744 is an abundant number, since it is smaller than the sum of its proper divisors (133700056).

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

91016744 is a wasteful number, since it uses less digits than its factorization.

91016744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 91016744 is about 9540.2695978678. The cubic root of 91016744 is about 449.8217302099.

The spelling of 91016744 in words is "ninety-one million, sixteen thousand, seven hundred forty-four".