720851040 has 288 divisors, whose sum is σ = 3028124736. Its totient is φ = 152064000.

The previous prime is 720851023. The next prime is 720851071. The reversal of 720851040 is 40158027.

It is a tau number, because it is divible by the number of its divisors (288).

It is a junction number, because it is equal to n+sod(n) for n = 720850995 and 720851013.

It is a congruent number.

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, 128290 + ... + 133790.

It is an arithmetic number, because the mean of its divisors is an integer number (10514322).

Almost surely, 2^720851040 is an apocalyptic number.

720851040 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 720851040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514062368).

720851040 is an abundant number, since it is smaller than the sum of its proper divisors (2307273696).

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

720851040 is a wasteful number, since it uses less digits than its factorization.

720851040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542 (or 5531 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 720851040 is about 26848.6692407650. The cubic root of 720851040 is about 896.6339449617.

The spelling of 720851040 in words is "seven hundred twenty million, eight hundred fifty-one thousand, forty".