91357248 has 56 divisors (see below), whose sum is σ = 249529600. Its totient is φ = 29468160.

The previous prime is 91357207. The next prime is 91357261. The reversal of 91357248 is 84275319.

It is a super-2 number, since 2×91357248² = 16692293524267008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723 + ... + 13626.

Almost surely, 2^91357248 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 91357248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124764800).

91357248 is an abundant number, since it is smaller than the sum of its proper divisors (158172352).

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

91357248 is a wasteful number, since it uses less digits than its factorization.

91357248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15395 (or 15385 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 91357248 is about 9558.0985556752. The cubic root of 91357248 is about 450.3819769065.

The spelling of 91357248 in words is "ninety-one million, three hundred fifty-seven thousand, two hundred forty-eight".