720299520 has 320 divisors, whose sum is σ = 2713487040. Its totient is φ = 180486144.

The previous prime is 720299501. The next prime is 720299527. The reversal of 720299520 is 25992027.

It is a tau number, because it is divible by the number of its divisors (320).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720299527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1174734 + ... + 1175346.

It is an arithmetic number, because the mean of its divisors is an integer number (8479647).

Almost surely, 2^720299520 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 720299520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356743520).

720299520 is an abundant number, since it is smaller than the sum of its proper divisors (1993187520).

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

720299520 is a wasteful number, since it uses less digits than its factorization.

720299520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 720299520 is about 26838.3963753425. The cubic root of 720299520 is about 896.4052163730.

The spelling of 720299520 in words is "seven hundred twenty million, two hundred ninety-nine thousand, five hundred twenty".