9871680 has 224 divisors, whose sum is σ = 38916864. Its totient is φ = 2064384.

The previous prime is 9871663. The next prime is 9871699. The reversal of 9871680 is 861789.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 87304 + ... + 87416.

It is an arithmetic number, because the mean of its divisors is an integer number (173736).

Almost surely, 2^9871680 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 9871680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19458432).

9871680 is an abundant number, since it is smaller than the sum of its proper divisors (29045184).

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

9871680 is a wasteful number, since it uses less digits than its factorization.

9871680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 9871680 is about 3141.9229780502. The cubic root of 9871680 is about 214.5179754661.

The spelling of 9871680 in words is "nine million, eight hundred seventy-one thousand, six hundred eighty".