91487232 has 110 divisors (see below), whose sum is σ = 273446448. Its totient is φ = 30468096.

The previous prime is 91487219. The next prime is 91487237. The reversal of 91487232 is 23278419.

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 (91487237) 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, 82393 + ... + 83495.

Almost surely, 2^91487232 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 91487232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136723224).

91487232 is an abundant number, since it is smaller than the sum of its proper divisors (181959216).

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

91487232 is a wasteful number, since it uses less digits than its factorization.

91487232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1108 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 91487232 is about 9564.8958175194. The cubic root of 91487232 is about 450.5954783314.

It can be divided in two parts, 91487 and 232, that added together give a palindrome (91719).

The spelling of 91487232 in words is "ninety-one million, four hundred eighty-seven thousand, two hundred thirty-two".