718283728 has 20 divisors (see below), whose sum is σ = 1473538500. Its totient is φ = 338015744.

The previous prime is 718283693. The next prime is 718283729. The reversal of 718283728 is 827382817.

It can be written as a sum of positive squares in 2 ways, for example, as 435640384 + 282643344 = 20872^2 + 16812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718283729) 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, 1320103 + ... + 1320646.

It is an arithmetic number, because the mean of its divisors is an integer number (73676925).

Almost surely, 2^718283728 is an apocalyptic number.

It is an amenable number.

718283728 is an abundant number, since it is smaller than the sum of its proper divisors (755254772).

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

718283728 is a wasteful number, since it uses less digits than its factorization.

718283728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640774 (or 2640768 counting only the distinct ones).

The product of its digits is 301056, while the sum is 46.

The square root of 718283728 is about 26800.8158084787. The cubic root of 718283728 is about 895.5682244152.

The spelling of 718283728 in words is "seven hundred eighteen million, two hundred eighty-three thousand, seven hundred twenty-eight".