720242744 has 64 divisors (see below), whose sum is σ = 1490711040. Its totient is φ = 324213120.

The previous prime is 720242741. The next prime is 720242749. The reversal of 720242744 is 447242027.

It is a super-2 number, since 2×720242744² = 1037499220569299072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 720242744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720242741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760079 + ... + 761025.

It is an arithmetic number, because the mean of its divisors is an integer number (23292360).

Almost surely, 2^720242744 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 720242744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745355520).

720242744 is an abundant number, since it is smaller than the sum of its proper divisors (770468296).

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

720242744 is a wasteful number, since it uses less digits than its factorization.

720242744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 720242744 is about 26837.3386161892. The cubic root of 720242744 is about 896.3816633748.

The spelling of 720242744 in words is "seven hundred twenty million, two hundred forty-two thousand, seven hundred forty-four".