9719720 has 32 divisors (see below), whose sum is σ = 22381920. Its totient is φ = 3796800.

The previous prime is 9719707. The next prime is 9719729. The reversal of 9719720 is 279179.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (9719729) 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 7 ways as a sum of consecutive naturals, for example, 1106 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (699435).

Almost surely, 2^9719720 is an apocalyptic number.

It is an amenable number.

9719720 is an abundant number, since it is smaller than the sum of its proper divisors (12662200).

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

9719720 is a wasteful number, since it uses less digits than its factorization.

9719720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705 (or 5701 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 9719720 is about 3117.6465482796. The cubic root of 9719720 is about 213.4115490108.

The spelling of 9719720 in words is "nine million, seven hundred nineteen thousand, seven hundred twenty".