91277248 has 56 divisors (see below), whose sum is σ = 192389760. Its totient is φ = 42873600.

The previous prime is 91277231. The next prime is 91277281. The reversal of 91277248 is 84277219.

It is a self number, because there is not a number n which added to its sum of digits gives 91277248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86323 + ... + 87373.

Almost surely, 2^91277248 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 91277248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96194880).

91277248 is an abundant number, since it is smaller than the sum of its proper divisors (101112512).

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

91277248 is a wasteful number, since it uses less digits than its factorization.

91277248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1135 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 91277248 is about 9553.9127063209. The cubic root of 91277248 is about 450.2504745492.

The spelling of 91277248 in words is "ninety-one million, two hundred seventy-seven thousand, two hundred forty-eight".