720874240 has 36 divisors (see below), whose sum is σ = 1726722144. Its totient is φ = 288349184.

The previous prime is 720874207. The next prime is 720874241. The reversal of 720874240 is 42478027.

720874240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 720874196 and 720874205.

It is not an unprimeable number, because it can be changed into a prime (720874241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280312 + ... + 282871.

It is an arithmetic number, because the mean of its divisors is an integer number (47964504).

Almost surely, 2^720874240 is an apocalyptic number.

It is an amenable number.

720874240 is an abundant number, since it is smaller than the sum of its proper divisors (1005847904).

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

720874240 is an equidigital number, since it uses as much as digits as its factorization.

720874240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563204 (or 563190 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 720874240 is about 26849.1012884975. The cubic root of 720874240 is about 896.6435640014.

The spelling of 720874240 in words is "seven hundred twenty million, eight hundred seventy-four thousand, two hundred forty".