9840220 has 24 divisors (see below), whose sum is σ = 22254624. Its totient is φ = 3633216.

The previous prime is 9840209. The next prime is 9840221. The reversal of 9840220 is 220489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9840221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18664 + ... + 19183.

It is an arithmetic number, because the mean of its divisors is an integer number (927276).

Almost surely, 2^9840220 is an apocalyptic number.

It is an amenable number.

9840220 is an abundant number, since it is smaller than the sum of its proper divisors (12414404).

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

9840220 is a wasteful number, since it uses less digits than its factorization.

9840220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37869 (or 37867 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 9840220 is about 3136.9124947948. The cubic root of 9840220 is about 214.2898509254.

The spelling of 9840220 in words is "nine million, eight hundred forty thousand, two hundred twenty".