99428273 has 16 divisors (see below), whose sum is σ = 121067520. Its totient is φ = 79757136.

The previous prime is 99428237. The next prime is 99428299. The reversal of 99428273 is 37282499.

It is not a de Polignac number, because 99428273 - 2⁶ = 99428209 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99428233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6536 + ... + 15542.

It is an arithmetic number, because the mean of its divisors is an integer number (7566720).

Almost surely, 2^99428273 is an apocalyptic number.

It is an amenable number.

99428273 is a deficient number, since it is larger than the sum of its proper divisors (21639247).

99428273 is a wasteful number, since it uses less digits than its factorization.

99428273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116.

The product of its digits is 217728, while the sum is 44.

The square root of 99428273 is about 9971.3726738098. The cubic root of 99428273 is about 463.2726183174.

The spelling of 99428273 in words is "ninety-nine million, four hundred twenty-eight thousand, two hundred seventy-three".