9825885728 has 12 divisors (see below), whose sum is σ = 19344712590. Its totient is φ = 4912942848.

The previous prime is 9825885721. The next prime is 9825885731. The reversal of 9825885728 is 8275885289.

It can be written as a sum of positive squares in only one way, i.e., 9500011024 + 325874704 = 97468^2 + 18052^2 .

It is not an unprimeable number, because it can be changed into a prime (9825885721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153529433 + ... + 153529496.

Almost surely, 2^9825885728 is an apocalyptic number.

It is an amenable number.

9825885728 is a deficient number, since it is larger than the sum of its proper divisors (9518826862).

9825885728 is a wasteful number, since it uses less digits than its factorization.

9825885728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307058939 (or 307058931 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 62.

The square root of 9825885728 is about 99125.6058140378. The cubic root of 9825885728 is about 2141.8574818077.

The spelling of 9825885728 in words is "nine billion, eight hundred twenty-five million, eight hundred eighty-five thousand, seven hundred twenty-eight".