28760065 has 16 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 22314880.

The previous prime is 28760059. The next prime is 28760089. The reversal of 28760065 is 56006782.

It is not a de Polignac number, because 28760065 - 2³ = 28760057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28760065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48702 + ... + 49288.

It is an arithmetic number, because the mean of its divisors is an integer number (2222640).

Almost surely, 2^28760065 is an apocalyptic number.

It is an amenable number.

28760065 is a deficient number, since it is larger than the sum of its proper divisors (6802175).

28760065 is a wasteful number, since it uses less digits than its factorization.

28760065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 28760065 is about 5362.8411313407. The cubic root of 28760065 is about 306.3820288698.

The spelling of 28760065 in words is "twenty-eight million, seven hundred sixty thousand, sixty-five".