28026028 has 12 divisors (see below), whose sum is σ = 49088592. Its totient is φ = 14000720.

The previous prime is 28026017. The next prime is 28026073. The reversal of 28026028 is 82062082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28025987 and 28026005.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3726 + ... + 8362.

It is an arithmetic number, because the mean of its divisors is an integer number (4090716).

Almost surely, 2^28026028 is an apocalyptic number.

It is an amenable number.

28026028 is a deficient number, since it is larger than the sum of its proper divisors (21062564).

28026028 is a wasteful number, since it uses less digits than its factorization.

28026028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152 (or 6150 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28026028 is about 5293.9614656701. The cubic root of 28026028 is about 303.7529589262.

The spelling of 28026028 in words is "twenty-eight million, twenty-six thousand, twenty-eight".