91316080 has 40 divisors (see below), whose sum is σ = 219164544. Its totient is φ = 35347200.

The previous prime is 91316077. The next prime is 91316083. The reversal of 91316080 is 8061319.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91316077) and next prime (91316083).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91316083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15931 + ... + 20890.

Almost surely, 2^91316080 is an apocalyptic number.

It is an amenable number.

91316080 is an abundant number, since it is smaller than the sum of its proper divisors (127848464).

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

91316080 is a wasteful number, since it uses less digits than its factorization.

91316080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36865 (or 36859 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 91316080 is about 9555.9447465962. The cubic root of 91316080 is about 450.3143153857.

Adding to 91316080 its reverse (8061319), we get a palindrome (99377399).

The spelling of 91316080 in words is "ninety-one million, three hundred sixteen thousand, eighty".