9840636 has 96 divisors (see below), whose sum is σ = 28286720. Its totient is φ = 2939328.

The previous prime is 9840617. The next prime is 9840643. The reversal of 9840636 is 6360489.

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 9840636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60291 + ... + 60453.

Almost surely, 2^9840636 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 9840636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14143360).

9840636 is an abundant number, since it is smaller than the sum of its proper divisors (18446084).

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

9840636 is a wasteful number, since it uses less digits than its factorization.

9840636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 9840636 is about 3136.9788013310. The cubic root of 9840636 is about 214.2928706181.

The spelling of 9840636 in words is "nine million, eight hundred forty thousand, six hundred thirty-six".