720872832 has 64 divisors (see below), whose sum is σ = 1943467200. Its totient is φ = 236696064.

The previous prime is 720872821. The next prime is 720872837. The reversal of 720872832 is 238278027.

720872832 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 (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720872837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11719 + ... + 39737.

It is an arithmetic number, because the mean of its divisors is an integer number (30366675).

Almost surely, 2^720872832 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 720872832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971733600).

720872832 is an abundant number, since it is smaller than the sum of its proper divisors (1222594368).

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

720872832 is a wasteful number, since it uses less digits than its factorization.

720872832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28103 (or 28091 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 720872832 is about 26849.0750678678. The cubic root of 720872832 is about 896.6429802311.

The spelling of 720872832 in words is "seven hundred twenty million, eight hundred seventy-two thousand, eight hundred thirty-two".