28713165 has 32 divisors (see below), whose sum is σ = 49768320. Its totient is φ = 14052096.

The previous prime is 28713143. The next prime is 28713169. The reversal of 28713165 is 56131782.

It is not a de Polignac number, because 28713165 - 2⁵ = 28713133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28713169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44334 + ... + 44976.

It is an arithmetic number, because the mean of its divisors is an integer number (1555260).

Almost surely, 2^28713165 is an apocalyptic number.

It is an amenable number.

28713165 is a deficient number, since it is larger than the sum of its proper divisors (21055155).

28713165 is a wasteful number, since it uses less digits than its factorization.

28713165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893.

The product of its digits is 10080, while the sum is 33.

The square root of 28713165 is about 5358.4666650078. The cubic root of 28713165 is about 306.2153957847.

The spelling of 28713165 in words is "twenty-eight million, seven hundred thirteen thousand, one hundred sixty-five".