91351248 has 40 divisors (see below), whose sum is σ = 236517600. Its totient is φ = 30382464.

The previous prime is 91351237. The next prime is 91351283. The reversal of 91351248 is 84215319.

It is a super-2 number, since 2×91351248² = 16690101022315008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22563 + ... + 26301.

It is an arithmetic number, because the mean of its divisors is an integer number (5912940).

Almost surely, 2^91351248 is an apocalyptic number.

It is an amenable number.

91351248 is an abundant number, since it is smaller than the sum of its proper divisors (145166352).

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

91351248 is a wasteful number, since it uses less digits than its factorization.

91351248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259 (or 4253 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 91351248 is about 9557.7846805628. The cubic root of 91351248 is about 450.3721168932.

The spelling of 91351248 in words is "ninety-one million, three hundred fifty-one thousand, two hundred forty-eight".