99728770 has 16 divisors (see below), whose sum is σ = 179625600. Its totient is φ = 39866224.

The previous prime is 99728743. The next prime is 99728771. The reversal of 99728770 is 7782799.

It is not an unprimeable number, because it can be changed into a prime (99728771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28581 + ... + 31879.

It is an arithmetic number, because the mean of its divisors is an integer number (11226600).

Almost surely, 2^99728770 is an apocalyptic number.

99728770 is a deficient number, since it is larger than the sum of its proper divisors (79896830).

99728770 is a wasteful number, since it uses less digits than its factorization.

99728770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 99728770 is about 9986.4292917939. The cubic root of 99728770 is about 463.7388573401.

The spelling of 99728770 in words is "ninety-nine million, seven hundred twenty-eight thousand, seven hundred seventy".