9902028 has 24 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 3274960.

The previous prime is 9902023. The next prime is 9902047. The reversal of 9902028 is 8202099.

It is a junction number, because it is equal to n+sod(n) for n = 9901986 and 9902004.

It is not an unprimeable number, because it can be changed into a prime (9902023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578 + ... + 4721.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 2^9902028 is an apocalyptic number.

It is an amenable number.

9902028 is an abundant number, since it is smaller than the sum of its proper divisors (13382772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9902028 is a wasteful number, since it uses less digits than its factorization.

9902028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6437 (or 6435 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 9902028 is about 3146.7487983632. The cubic root of 9902028 is about 214.7375777889.

The spelling of 9902028 in words is "nine million, nine hundred two thousand, twenty-eight".