28519205 has 16 divisors (see below), whose sum is σ = 40207104. Its totient is φ = 19145280.

The previous prime is 28519201. The next prime is 28519213. The reversal of 28519205 is 50291582.

It is not a de Polignac number, because 28519205 - 2² = 28519201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28519201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19229 + ... + 20658.

It is an arithmetic number, because the mean of its divisors is an integer number (2512944).

Almost surely, 2^28519205 is an apocalyptic number.

It is an amenable number.

28519205 is a deficient number, since it is larger than the sum of its proper divisors (11687899).

28519205 is a wasteful number, since it uses less digits than its factorization.

28519205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39916.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 28519205 is about 5340.3375361488. The cubic root of 28519205 is about 305.5243332407.

The spelling of 28519205 in words is "twenty-eight million, five hundred nineteen thousand, two hundred five".