9891552 has 192 divisors, whose sum is σ = 32659200. Its totient is φ = 2580480.

The previous prime is 9891551. The next prime is 9891589. The reversal of 9891552 is 2551989.

Its product of digits (32400) is a multiple of the sum of its prime divisors (81).

It is a self number, because there is not a number n which added to its sum of digits gives 9891552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891551) 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 31 ways as a sum of consecutive naturals, for example, 341074 + ... + 341102.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

Almost surely, 2^9891552 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 9891552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16329600).

9891552 is an abundant number, since it is smaller than the sum of its proper divisors (22767648).

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

9891552 is a wasteful number, since it uses less digits than its factorization.

9891552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 81 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The square root of 9891552 is about 3145.0837826678. The cubic root of 9891552 is about 214.6618227799.

The spelling of 9891552 in words is "nine million, eight hundred ninety-one thousand, five hundred fifty-two".