28776265 has 16 divisors (see below), whose sum is σ = 40826880. Its totient is φ = 19051200.

The previous prime is 28776239. The next prime is 28776283. The reversal of 28776265 is 56267782.

It is not a de Polignac number, because 28776265 - 2⁵ = 28776233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13161 + ... + 15190.

It is an arithmetic number, because the mean of its divisors is an integer number (2551680).

Almost surely, 2^28776265 is an apocalyptic number.

It is an amenable number.

28776265 is a deficient number, since it is larger than the sum of its proper divisors (12050615).

28776265 is a wasteful number, since it uses less digits than its factorization.

28776265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28392.

The product of its digits is 282240, while the sum is 43.

The square root of 28776265 is about 5364.3513121346. The cubic root of 28776265 is about 306.4395444704.

The spelling of 28776265 in words is "twenty-eight million, seven hundred seventy-six thousand, two hundred sixty-five".