9982780 has 12 divisors (see below), whose sum is σ = 20963880. Its totient is φ = 3993104.

The previous prime is 9982769. The next prime is 9982781. The reversal of 9982780 is 872899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9982781) 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 3 ways as a sum of consecutive naturals, for example, 249550 + ... + 249589.

It is an arithmetic number, because the mean of its divisors is an integer number (1746990).

Almost surely, 2^9982780 is an apocalyptic number.

It is an amenable number.

9982780 is an abundant number, since it is smaller than the sum of its proper divisors (10981100).

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

9982780 is a wasteful number, since it uses less digits than its factorization.

9982780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499148 (or 499146 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 9982780 is about 3159.5537659613. The cubic root of 9982780 is about 215.3197334005.

The spelling of 9982780 in words is "nine million, nine hundred eighty-two thousand, seven hundred eighty".