9891232 has 72 divisors (see below), whose sum is σ = 22135680. Its totient is φ = 4343040.

The previous prime is 9891221. The next prime is 9891239. The reversal of 9891232 is 2321989.

9891232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 9⁵ + 8⁴ + 9⁷ + 1 + 2² + 3¹⁴ + 2¹⁸ .

It is not an unprimeable number, because it can be changed into a prime (9891239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167619 + ... + 167677.

It is an arithmetic number, because the mean of its divisors is an integer number (307440).

Almost surely, 2^9891232 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 9891232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11067840).

9891232 is an abundant number, since it is smaller than the sum of its proper divisors (12244448).

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

9891232 is a wasteful number, since it uses less digits than its factorization.

9891232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 105 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 9891232 is about 3145.0329092078. The cubic root of 9891232 is about 214.6595079250.

The spelling of 9891232 in words is "nine million, eight hundred ninety-one thousand, two hundred thirty-two".