28080145 has 16 divisors (see below), whose sum is σ = 34618752. Its totient is φ = 21857920.

The previous prime is 28080137. The next prime is 28080163. The reversal of 28080145 is 54108082.

It is not a de Polignac number, because 28080145 - 2³ = 28080137 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 28989 + ... + 29941.

It is an arithmetic number, because the mean of its divisors is an integer number (2163672).

Almost surely, 2^28080145 is an apocalyptic number.

It is an amenable number.

28080145 is a deficient number, since it is larger than the sum of its proper divisors (6538607).

28080145 is an equidigital number, since it uses as much as digits as its factorization.

28080145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 28080145 is about 5299.0702014599. The cubic root of 28080145 is about 303.9483443222.

The spelling of 28080145 in words is "twenty-eight million, eighty thousand, one hundred forty-five".