99028 has 12 divisors (see below), whose sum is σ = 182560. Its totient is φ = 46872.

The previous prime is 99023. The next prime is 99041. The reversal of 99028 is 82099.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 98987 and 99005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99023) by changing a digit.

99028 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576 + ... + 727.

2⁹⁹⁰²⁸ is an apocalyptic number.

It is an amenable number.

99028 is a deficient number, since it is larger than the sum of its proper divisors (83532).

99028 is a wasteful number, since it uses less digits than its factorization.

99028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 99028 is about 314.6871462262. The cubic root of 99028 is about 46.2650109541.

The spelling of 99028 in words is "ninety-nine thousand, twenty-eight".