9807983280 has 160 divisors (see below), whose sum is σ = 34948209600. Its totient is φ = 2525257728.

The previous prime is 9807983279. The next prime is 9807983287. The reversal of 9807983280 is 823897089.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9807983287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15649 + ... + 140928.

It is an arithmetic number, because the mean of its divisors is an integer number (218426310).

Almost surely, 2^9807983280 is an apocalyptic number.

9807983280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9807983280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17474104800).

9807983280 is an abundant number, since it is smaller than the sum of its proper divisors (25140226320).

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

9807983280 is a wasteful number, since it uses less digits than its factorization.

9807983280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156628 (or 156616 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 9807983280 is about 99035.2628107787. The cubic root of 9807983280 is about 2140.5558925046. Note that the first 3 decimals are identical.

The spelling of 9807983280 in words is "nine billion, eight hundred seven million, nine hundred eighty-three thousand, two hundred eighty".