9642720 has 48 divisors (see below), whose sum is σ = 30376080. Its totient is φ = 2571264.

The previous prime is 9642719. The next prime is 9642751. The reversal of 9642720 is 272469.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9565 + ... + 10524.

It is an arithmetic number, because the mean of its divisors is an integer number (632835).

Almost surely, 2^9642720 is an apocalyptic number.

It is an amenable number.

9642720 is an abundant number, since it is smaller than the sum of its proper divisors (20733360).

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

9642720 is a wasteful number, since it uses less digits than its factorization.

9642720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20107 (or 20099 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 9642720 is about 3105.2729348642. The cubic root of 9642720 is about 212.8465027359.

The spelling of 9642720 in words is "nine million, six hundred forty-two thousand, seven hundred twenty".