9868253728 has 12 divisors (see below), whose sum is σ = 19428124590. Its totient is φ = 4934126848.

The previous prime is 9868253669. The next prime is 9868253827. The reversal of 9868253728 is 8273528689.

It can be written as a sum of positive squares in only one way, i.e., 6350814864 + 3517438864 = 79692^2 + 59308^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154191433 + ... + 154191496.

Almost surely, 2^9868253728 is an apocalyptic number.

It is an amenable number.

9868253728 is a deficient number, since it is larger than the sum of its proper divisors (9559870862).

9868253728 is a wasteful number, since it uses less digits than its factorization.

9868253728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308382939 (or 308382931 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 58.

The square root of 9868253728 is about 99339.0845941314. The cubic root of 9868253728 is about 2144.9315422718.

The spelling of 9868253728 in words is "nine billion, eight hundred sixty-eight million, two hundred fifty-three thousand, seven hundred twenty-eight".