9840786280 has 128 divisors (see below), whose sum is σ = 25150406400. Its totient is φ = 3435374592.

The previous prime is 9840786271. The next prime is 9840786301. The reversal of 9840786280 is 826870489.

9840786280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9257029 + ... + 9258091.

It is an arithmetic number, because the mean of its divisors is an integer number (196487550).

Almost surely, 2^9840786280 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 9840786280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12575203200).

9840786280 is an abundant number, since it is smaller than the sum of its proper divisors (15309620120).

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

9840786280 is a wasteful number, since it uses less digits than its factorization.

9840786280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 9840786280 is about 99200.7372956472. The cubic root of 9840786280 is about 2142.9396146121.

The spelling of 9840786280 in words is "nine billion, eight hundred forty million, seven hundred eighty-six thousand, two hundred eighty".