9865028 has 12 divisors (see below), whose sum is σ = 18172560. Its totient is φ = 4672872.

The previous prime is 9865021. The next prime is 9865033. The reversal of 9865028 is 8205689.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9864982 and 9865000.

It is not an unprimeable number, because it can be changed into a prime (9865021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64826 + ... + 64977.

It is an arithmetic number, because the mean of its divisors is an integer number (1514380).

Almost surely, 2^9865028 is an apocalyptic number.

It is an amenable number.

9865028 is a deficient number, since it is larger than the sum of its proper divisors (8307532).

9865028 is a wasteful number, since it uses less digits than its factorization.

9865028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129826 (or 129824 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 9865028 is about 3140.8642122830. The cubic root of 9865028 is about 214.4697805552.

The spelling of 9865028 in words is "nine million, eight hundred sixty-five thousand, twenty-eight".