1004028 has 24 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 323760.

The previous prime is 1004027. The next prime is 1004033. The reversal of 1004028 is 8204001.

It is a junction number, because it is equal to n+sod(n) for n = 1003998 and 1004016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004027) 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, 978 + ... + 1721.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2^1004028 is an apocalyptic number.

It is an amenable number.

1004028 is an abundant number, since it is smaller than the sum of its proper divisors (1415172).

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

1004028 is a wasteful number, since it uses less digits than its factorization.

1004028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1004028 is about 1002.0119759763. The cubic root of 1004028 is about 100.1340867936.

Adding to 1004028 its reverse (8204001), we get a palindrome (9208029).

The spelling of 1004028 in words is "one million, four thousand, twenty-eight".