720881280 has 384 divisors, whose sum is σ = 2997820800. Its totient is φ = 155934720.

The previous prime is 720881267. The next prime is 720881303. The reversal of 720881280 is 82188027.

720881280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 765610 + ... + 766550.

It is an arithmetic number, because the mean of its divisors is an integer number (7806825).

Almost surely, 2^720881280 is an apocalyptic number.

720881280 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720881280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498910400).

720881280 is an abundant number, since it is smaller than the sum of its proper divisors (2276939520).

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

720881280 is a wasteful number, since it uses less digits than its factorization.

720881280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 720881280 is about 26849.2323912621. The cubic root of 720881280 is about 896.6464828416.

It can be divided in two parts, 7208 and 81280, that added together give a palindrome (88488).

The spelling of 720881280 in words is "seven hundred twenty million, eight hundred eighty-one thousand, two hundred eighty".