28085744 has 10 divisors (see below), whose sum is σ = 54416160. Its totient is φ = 14042864.

The previous prime is 28085723. The next prime is 28085749. The reversal of 28085744 is 44758082.

It is a junction number, because it is equal to n+sod(n) for n = 28085698 and 28085707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28085749) 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 as a sum of consecutive naturals, namely, 877664 + ... + 877695.

It is an arithmetic number, because the mean of its divisors is an integer number (5441616).

Almost surely, 2^28085744 is an apocalyptic number.

It is an amenable number.

28085744 is a deficient number, since it is larger than the sum of its proper divisors (26330416).

28085744 is a wasteful number, since it uses less digits than its factorization.

28085744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755367 (or 1755361 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 28085744 is about 5299.5984753564. The cubic root of 28085744 is about 303.9685447602.

The spelling of 28085744 in words is "twenty-eight million, eighty-five thousand, seven hundred forty-four".