720523230 has 32 divisors (see below), whose sum is σ = 1976292864. Its totient is φ = 164690976.

The previous prime is 720523211. The next prime is 720523247. The reversal of 720523230 is 32325027.

It is a self number, because there is not a number n which added to its sum of digits gives 720523230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1715322 + ... + 1715741.

It is an arithmetic number, because the mean of its divisors is an integer number (61759152).

Almost surely, 2^720523230 is an apocalyptic number.

720523230 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

720523230 is an abundant number, since it is smaller than the sum of its proper divisors (1255769634).

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

720523230 is a wasteful number, since it uses less digits than its factorization.

720523230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431080.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 720523230 is about 26842.5637747217. The cubic root of 720523230 is about 896.4980083520.

Adding to 720523230 its reverse (32325027), we get a palindrome (752848257).

The spelling of 720523230 in words is "seven hundred twenty million, five hundred twenty-three thousand, two hundred thirty".