28276755 has 16 divisors (see below), whose sum is σ = 48723360. Its totient is φ = 13920768.

The previous prime is 28276741. The next prime is 28276777. The reversal of 28276755 is 55767282.

It is not a de Polignac number, because 28276755 - 2⁴ = 28276739 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, 72310 + ... + 72699.

It is an arithmetic number, because the mean of its divisors is an integer number (3045210).

Almost surely, 2^28276755 is an apocalyptic number.

28276755 is a deficient number, since it is larger than the sum of its proper divisors (20446605).

28276755 is a wasteful number, since it uses less digits than its factorization.

28276755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145030.

The product of its digits is 235200, while the sum is 42.

The square root of 28276755 is about 5317.5892094068. The cubic root of 28276755 is about 304.6560846242.

It can be divided in two parts, 282 and 76755, that multiplied together give a triangular number (21644910 = T₆₅₇₉).

The spelling of 28276755 in words is "twenty-eight million, two hundred seventy-six thousand, seven hundred fifty-five".