91870848 has 80 divisors (see below), whose sum is σ = 273437010. Its totient is φ = 30620160.

The previous prime is 91870843. The next prime is 91870859. The reversal of 91870848 is 84807819.

It can be written as a sum of positive squares in only one way, i.e., 50808384 + 41062464 = 7128^2 + 6408^2 .

It is not an unprimeable number, because it can be changed into a prime (91870841) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 5938 + ... + 14798.

Almost surely, 2^91870848 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 91870848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136718505).

91870848 is an abundant number, since it is smaller than the sum of its proper divisors (181566162).

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

91870848 is an equidigital number, since it uses as much as digits as its factorization.

91870848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8866 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 91870848 is about 9584.9281687449. The cubic root of 91870848 is about 451.2243988617.

The spelling of 91870848 in words is "ninety-one million, eight hundred seventy thousand, eight hundred forty-eight".