91298532 has 48 divisors (see below), whose sum is σ = 230840960. Its totient is φ = 28083744.

The previous prime is 91298531. The next prime is 91298533. The reversal of 91298532 is 23589219.

It is an interprime number because it is at equal distance from previous prime (91298531) and next prime (91298533).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (91298531) 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 15 ways as a sum of consecutive naturals, for example, 24633 + ... + 28095.

Almost surely, 2^91298532 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 91298532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115420480).

91298532 is an abundant number, since it is smaller than the sum of its proper divisors (139542428).

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

91298532 is a wasteful number, since it uses less digits than its factorization.

91298532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509 (or 3481 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 91298532 is about 9555.0265305754. The cubic root of 91298532 is about 450.2854682508.

The spelling of 91298532 in words is "ninety-one million, two hundred ninety-eight thousand, five hundred thirty-two".