9872136 has 48 divisors (see below), whose sum is σ = 27605760. Its totient is φ = 3183840.

The previous prime is 9872131. The next prime is 9872171. The reversal of 9872136 is 6312789.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 9872136.

It is not an unprimeable number, because it can be changed into a prime (9872131) 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, 21 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (575120).

Almost surely, 2^9872136 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 9872136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13802880).

9872136 is an abundant number, since it is smaller than the sum of its proper divisors (17733624).

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

9872136 is a wasteful number, since it uses less digits than its factorization.

9872136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466 (or 4459 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9872136 is about 3141.9955442362. The cubic root of 9872136 is about 214.5212784733.

The spelling of 9872136 in words is "nine million, eight hundred seventy-two thousand, one hundred thirty-six".