720380056 has 64 divisors (see below), whose sum is σ = 1548046080. Its totient is φ = 311076480.

The previous prime is 720380053. The next prime is 720380057. The reversal of 720380056 is 650083027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720380053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316635 + ... + 318901.

It is an arithmetic number, because the mean of its divisors is an integer number (24188220).

Almost surely, 2^720380056 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 720380056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774023040).

720380056 is an abundant number, since it is smaller than the sum of its proper divisors (827666024).

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

720380056 is a wasteful number, since it uses less digits than its factorization.

720380056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2460 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 720380056 is about 26839.8967211128. The cubic root of 720380056 is about 896.4386238644.

It can be divided in two parts, 7203800 and 56, that added together give a square (7203856 = 2684²).

The spelling of 720380056 in words is "seven hundred twenty million, three hundred eighty thousand, fifty-six".