9729680 has 20 divisors (see below), whose sum is σ = 22621692. Its totient is φ = 3891840.

The previous prime is 9729679. The next prime is 9729697. The reversal of 9729680 is 869279.

It can be written as a sum of positive squares in 2 ways, for example, as 2611456 + 7118224 = 1616^2 + 2668^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60731 + ... + 60890.

Almost surely, 2^9729680 is an apocalyptic number.

It is an amenable number.

9729680 is an abundant number, since it is smaller than the sum of its proper divisors (12892012).

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

9729680 is a wasteful number, since it uses less digits than its factorization.

9729680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121634 (or 121628 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9729680 is about 3119.2434980296. The cubic root of 9729680 is about 213.4844198822.

The spelling of 9729680 in words is "nine million, seven hundred twenty-nine thousand, six hundred eighty".