28112145 has 8 divisors (see below), whose sum is σ = 44979456. Its totient is φ = 14993136.

The previous prime is 28112137. The next prime is 28112159. The reversal of 28112145 is 54121182.

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

It is not a de Polignac number, because 28112145 - 2³ = 28112137 is a prime.

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, 937057 + ... + 937086.

It is an arithmetic number, because the mean of its divisors is an integer number (5622432).

Almost surely, 2^28112145 is an apocalyptic number.

It is an amenable number.

28112145 is a deficient number, since it is larger than the sum of its proper divisors (16867311).

28112145 is a wasteful number, since it uses less digits than its factorization.

28112145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874151.

The product of its digits is 640, while the sum is 24.

The square root of 28112145 is about 5302.0887393555. The cubic root of 28112145 is about 304.0637598546.

The spelling of 28112145 in words is "twenty-eight million, one hundred twelve thousand, one hundred forty-five".