99728735 has 8 divisors (see below), whose sum is σ = 119785200. Its totient is φ = 79709184.

The previous prime is 99728729. The next prime is 99728743. The reversal of 99728735 is 53782799.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99728735 - 2⁸ = 99728479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2885 + ... + 14414.

It is an arithmetic number, because the mean of its divisors is an integer number (14973150).

Almost surely, 2^99728735 is an apocalyptic number.

99728735 is a deficient number, since it is larger than the sum of its proper divisors (20056465).

99728735 is a wasteful number, since it uses less digits than its factorization.

99728735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18457.

The product of its digits is 952560, while the sum is 50.

The square root of 99728735 is about 9986.4275394157. The cubic root of 99728735 is about 463.7388030901.

The spelling of 99728735 in words is "ninety-nine million, seven hundred twenty-eight thousand, seven hundred thirty-five".