28165245 has 8 divisors (see below), whose sum is σ = 45064416. Its totient is φ = 15021456.

The previous prime is 28165223. The next prime is 28165261. The reversal of 28165245 is 54256182.

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

It is not a de Polignac number, because 28165245 - 2⁵ = 28165213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938827 + ... + 938856.

It is an arithmetic number, because the mean of its divisors is an integer number (5633052).

Almost surely, 2^28165245 is an apocalyptic number.

It is an amenable number.

28165245 is a deficient number, since it is larger than the sum of its proper divisors (16899171).

28165245 is a wasteful number, since it uses less digits than its factorization.

28165245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877691.

The product of its digits is 19200, while the sum is 33.

The square root of 28165245 is about 5307.0938374971. The cubic root of 28165245 is about 304.2550844058.

The spelling of 28165245 in words is "twenty-eight million, one hundred sixty-five thousand, two hundred forty-five".