4320730 has 8 divisors (see below), whose sum is σ = 7777332. Its totient is φ = 1728288.

The previous prime is 4320721. The next prime is 4320761. The reversal of 4320730 is 370234.

It can be written as a sum of positive squares in 2 ways, for example, as 4028049 + 292681 = 2007^2 + 541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4320698 and 4320707.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216027 + ... + 216046.

Almost surely, 2^4320730 is an apocalyptic number.

4320730 is a deficient number, since it is larger than the sum of its proper divisors (3456602).

4320730 is a wasteful number, since it uses less digits than its factorization.

4320730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432080.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 4320730 is about 2078.6365723714. The cubic root of 4320730 is about 162.8742302052.

Adding to 4320730 its product of nonzero digits (504), we get a palindrome (4321234).

Adding to 4320730 its reverse (370234), we get a palindrome (4690964).

It can be divided in two parts, 4320 and 730, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 4320730 in words is "four million, three hundred twenty thousand, seven hundred thirty".