9324721 has 16 divisors (see below), whose sum is σ = 11390976. Its totient is φ = 7451136.

The previous prime is 9324697. The next prime is 9324739. The reversal of 9324721 is 1274239.

9324721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

9324721 is a nontrivial binomial coefficient, being equal to C(4319, 2).

It is not a de Polignac number, because 9324721 - 2⁹ = 9324209 is a prime.

It is a super-3 number, since 3×9324721³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9324721.

It is not an unprimeable number, because it can be changed into a prime (9324751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14805 + ... + 15421.

It is an arithmetic number, because the mean of its divisors is an integer number (711936).

Almost surely, 2^9324721 is an apocalyptic number.

9324721 is the 4318-th triangular number.

9324721 is the 1440-th centered nonagonal number.

It is an amenable number.

9324721 is a deficient number, since it is larger than the sum of its proper divisors (2066255).

9324721 is a wasteful number, since it uses less digits than its factorization.

9324721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768.

The product of its digits is 3024, while the sum is 28.

The square root of 9324721 is about 3053.6406140867. The cubic root of 9324721 is about 210.4805397612.

The spelling of 9324721 in words is "nine million, three hundred twenty-four thousand, seven hundred twenty-one".