99810728 has 16 divisors (see below), whose sum is σ = 191710260. Its totient is φ = 48688000.

The previous prime is 99810703. The next prime is 99810761. The reversal of 99810728 is 82701899.

It can be written as a sum of positive squares in 2 ways, for example, as 75030244 + 24780484 = 8662^2 + 4978^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151823 + ... + 152478.

Almost surely, 2^99810728 is an apocalyptic number.

It is an amenable number.

99810728 is a deficient number, since it is larger than the sum of its proper divisors (91899532).

99810728 is a wasteful number, since it uses less digits than its factorization.

99810728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304348 (or 304344 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 99810728 is about 9990.5319177709. The cubic root of 99810728 is about 463.8658574776.

The spelling of 99810728 in words is "ninety-nine million, eight hundred ten thousand, seven hundred twenty-eight".