28173105 has 48 divisors (see below), whose sum is σ = 52153920. Its totient is φ = 14027904.

The previous prime is 28173071. The next prime is 28173107. The reversal of 28173105 is 50137182.

It is not a de Polignac number, because 28173105 - 2⁸ = 28172849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28173107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70767 + ... + 71163.

It is an arithmetic number, because the mean of its divisors is an integer number (1086540).

Almost surely, 2^28173105 is an apocalyptic number.

It is an amenable number.

28173105 is a deficient number, since it is larger than the sum of its proper divisors (23980815).

28173105 is a wasteful number, since it uses less digits than its factorization.

28173105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 28173105 is about 5307.8343041207. The cubic root of 28173105 is about 304.2833843258.

The spelling of 28173105 in words is "twenty-eight million, one hundred seventy-three thousand, one hundred five".