28108245 has 16 divisors (see below), whose sum is σ = 49061952. Its totient is φ = 13628160.

The previous prime is 28108243. The next prime is 28108307. The reversal of 28108245 is 54280182.

It is not a de Polignac number, because 28108245 - 2¹ = 28108243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85012 + ... + 85341.

It is an arithmetic number, because the mean of its divisors is an integer number (3066372).

Almost surely, 2^28108245 is an apocalyptic number.

It is an amenable number.

28108245 is a deficient number, since it is larger than the sum of its proper divisors (20953707).

28108245 is a wasteful number, since it uses less digits than its factorization.

28108245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170372.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 28108245 is about 5301.7209470133. The cubic root of 28108245 is about 304.0496982749.

The spelling of 28108245 in words is "twenty-eight million, one hundred eight thousand, two hundred forty-five".