4320724 has 12 divisors (see below), whose sum is σ = 7665364. Its totient is φ = 2130624.

The previous prime is 4320721. The next prime is 4320761. The reversal of 4320724 is 4270234.

4320724 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2016400 + 2304324 = 1420^2 + 1518^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 4³ + 3 + 2⁹ + 0 + 7⁶ + 2¹³ + 4¹¹ .

It is a junction number, because it is equal to n+sod(n) for n = 4320695 and 4320704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7107 + ... + 7690.

Almost surely, 2^4320724 is an apocalyptic number.

It is an amenable number.

4320724 is a deficient number, since it is larger than the sum of its proper divisors (3344640).

4320724 is a wasteful number, since it uses less digits than its factorization.

4320724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874 (or 14872 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 4320724 is about 2078.6351291172. The cubic root of 4320724 is about 162.8741548132.

Adding to 4320724 its reverse (4270234), we get a palindrome (8590958).

The spelling of 4320724 in words is "four million, three hundred twenty thousand, seven hundred twenty-four".