28005124 has 12 divisors (see below), whose sum is σ = 56010304. Its totient is φ = 12002184.

The previous prime is 28005079. The next prime is 28005139. The reversal of 28005124 is 42150082.

28005124 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28005095 and 28005104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500064 + ... + 500119.

Almost surely, 2^28005124 is an apocalyptic number.

It is an amenable number.

28005124 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28005124 is a wasteful number, since it uses less digits than its factorization.

28005124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000194 (or 1000192 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 28005124 is about 5291.9867724702. The cubic root of 28005124 is about 303.6774192505.

The spelling of 28005124 in words is "twenty-eight million, five thousand, one hundred twenty-four".