720173268 has 84 divisors (see below), whose sum is σ = 1897203168. Its totient is φ = 239092560.

The previous prime is 720173257. The next prime is 720173297. The reversal of 720173268 is 862371027.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 27 ways as a sum of consecutive naturals, for example, 1431505 + ... + 1432007.

It is an arithmetic number, because the mean of its divisors is an integer number (22585752).

Almost surely, 2^720173268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720173268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948601584).

720173268 is an abundant number, since it is smaller than the sum of its proper divisors (1177029900).

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

720173268 is a wasteful number, since it uses less digits than its factorization.

720173268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 720173268 is about 26836.0441943294. The cubic root of 720173268 is about 896.3528402150.

The spelling of 720173268 in words is "seven hundred twenty million, one hundred seventy-three thousand, two hundred sixty-eight".