720323430 has 48 divisors (see below), whose sum is σ = 1807248240. Its totient is φ = 183730624.

The previous prime is 720323423. The next prime is 720323447. The reversal of 720323430 is 34323027.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 720323430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6825 + ... + 38564.

It is an arithmetic number, because the mean of its divisors is an integer number (37651005).

Almost surely, 2^720323430 is an apocalyptic number.

720323430 is an abundant number, since it is smaller than the sum of its proper divisors (1086924810).

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

720323430 is a wasteful number, since it uses less digits than its factorization.

720323430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45445 (or 45422 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 720323430 is about 26838.8418155479. The cubic root of 720323430 is about 896.4151348448.

Adding to 720323430 its reverse (34323027), we get a palindrome (754646457).

The spelling of 720323430 in words is "seven hundred twenty million, three hundred twenty-three thousand, four hundred thirty".