91120248 has 64 divisors (see below), whose sum is σ = 255780000. Its totient is φ = 30053376.

The previous prime is 91120241. The next prime is 91120277. The reversal of 91120248 is 84202119.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91120241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18778 + ... + 23126.

Almost surely, 2^91120248 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 91120248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127890000).

91120248 is an abundant number, since it is smaller than the sum of its proper divisors (164659752).

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

91120248 is a wasteful number, since it uses less digits than its factorization.

91120248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461 (or 4451 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 91120248 is about 9545.6926411864. The cubic root of 91120248 is about 449.9921776418.

The spelling of 91120248 in words is "ninety-one million, one hundred twenty thousand, two hundred forty-eight".