720240847920 has 400 divisors, whose sum is σ = 2786987478528. Its totient is φ = 170888071680.

The previous prime is 720240847913. The next prime is 720240847943. The reversal of 720240847920 is 29748042027.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3242667 + ... + 3457653.

Almost surely, 2^720240847920 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 720240847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393493739264).

720240847920 is an abundant number, since it is smaller than the sum of its proper divisors (2066746630608).

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

720240847920 is a wasteful number, since it uses less digits than its factorization.

720240847920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215070 (or 215055 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

Adding to 720240847920 its reverse (29748042027), we get a palindrome (749988889947).

The spelling of 720240847920 in words is "seven hundred twenty billion, two hundred forty million, eight hundred forty-seven thousand, nine hundred twenty".