28148285 has 8 divisors (see below), whose sum is σ = 36848736. Its totient is φ = 20471440.

The previous prime is 28148261. The next prime is 28148303. The reversal of 28148285 is 58284182.

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

It is not a de Polignac number, because 28148285 - 2¹⁰ = 28147261 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 255839 + ... + 255948.

It is an arithmetic number, because the mean of its divisors is an integer number (4606092).

Almost surely, 2^28148285 is an apocalyptic number.

It is an amenable number.

28148285 is a deficient number, since it is larger than the sum of its proper divisors (8700451).

28148285 is a wasteful number, since it uses less digits than its factorization.

28148285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511803.

The product of its digits is 40960, while the sum is 38.

The square root of 28148285 is about 5305.4957355557. The cubic root of 28148285 is about 304.1940020053.

The spelling of 28148285 in words is "twenty-eight million, one hundred forty-eight thousand, two hundred eighty-five".