28285406 has 8 divisors (see below), whose sum is σ = 43025904. Its totient is φ = 13943440.

The previous prime is 28285373. The next prime is 28285417. The reversal of 28285406 is 60458282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99455 + ... + 99738.

It is an arithmetic number, because the mean of its divisors is an integer number (5378238).

Almost surely, 2^28285406 is an apocalyptic number.

28285406 is a deficient number, since it is larger than the sum of its proper divisors (14740498).

28285406 is a wasteful number, since it uses less digits than its factorization.

28285406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199266.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28285406 is about 5318.4025797226. The cubic root of 28285406 is about 304.6871503182.

The spelling of 28285406 in words is "twenty-eight million, two hundred eighty-five thousand, four hundred six".