91066248 has 256 divisors, whose sum is σ = 321753600. Its totient is φ = 23224320.

The previous prime is 91066169. The next prime is 91066249. The reversal of 91066248 is 84266019.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91066249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 805840 + ... + 805952.

It is an arithmetic number, because the mean of its divisors is an integer number (1256850).

Almost surely, 2^91066248 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 91066248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160876800).

91066248 is an abundant number, since it is smaller than the sum of its proper divisors (230687352).

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

91066248 is a wasteful number, since it uses less digits than its factorization.

91066248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 91066248 is about 9542.8637211269. The cubic root of 91066248 is about 449.9032680969.

The spelling of 91066248 in words is "ninety-one million, sixty-six thousand, two hundred forty-eight".