91748928 has 56 divisors (see below), whose sum is σ = 248420128. Its totient is φ = 29869056.

The previous prime is 91748927. The next prime is 91748957. The reversal of 91748928 is 82984719.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (91748927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2700 + ... + 13812.

Almost surely, 2^91748928 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 91748928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124210064).

91748928 is an abundant number, since it is smaller than the sum of its proper divisors (156671200).

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

91748928 is a wasteful number, since it uses less digits than its factorization.

91748928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11171 (or 11161 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 91748928 is about 9578.5660722261. The cubic root of 91748928 is about 451.0247068174.

The spelling of 91748928 in words is "ninety-one million, seven hundred forty-eight thousand, nine hundred twenty-eight".