1000718728 has 16 divisors (see below), whose sum is σ = 1876689180. Its totient is φ = 500268288.

The previous prime is 1000718723. The next prime is 1000718743. The reversal of 1000718728 is 8278170001.

It can be written as a sum of positive squares in 2 ways, for example, as 937706884 + 63011844 = 30622^2 + 7938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000718693 and 1000718702.

It is not an unprimeable number, because it can be changed into a prime (1000718723) 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, 67300 + ... + 80812.

Almost surely, 2^1000718728 is an apocalyptic number.

It is an amenable number.

1000718728 is a deficient number, since it is larger than the sum of its proper divisors (875970452).

1000718728 is a wasteful number, since it uses less digits than its factorization.

1000718728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22776 (or 22772 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 1000718728 is about 31634.1386479860. The cubic root of 1000718728 is about 1000.2395186262.

Adding to 1000718728 its reverse (8278170001), we get a palindrome (9278888729).

The spelling of 1000718728 in words is "one billion, seven hundred eighteen thousand, seven hundred twenty-eight".