28085072 has 20 divisors (see below), whose sum is σ = 55886676. Its totient is φ = 13662720.

The previous prime is 28085051. The next prime is 28085087. The reversal of 28085072 is 27058082.

It can be written as a sum of positive squares in 2 ways, for example, as 18696976 + 9388096 = 4324^2 + 3064^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 23129 + ... + 24312.

Almost surely, 2^28085072 is an apocalyptic number.

It is an amenable number.

28085072 is a deficient number, since it is larger than the sum of its proper divisors (27801604).

28085072 is a wasteful number, since it uses less digits than its factorization.

28085072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47486 (or 47480 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 28085072 is about 5299.5350739475. The cubic root of 28085072 is about 303.9661204165.

The spelling of 28085072 in words is "twenty-eight million, eighty-five thousand, seventy-two".