28767277 has 16 divisors (see below), whose sum is σ = 35983872. Its totient is φ = 22342320.

The previous prime is 28767259. The next prime is 28767307. The reversal of 28767277 is 77276782.

It is not a de Polignac number, because 28767277 - 2¹⁵ = 28734509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28767377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41778 + ... + 42460.

It is an arithmetic number, because the mean of its divisors is an integer number (2248992).

Almost surely, 2^28767277 is an apocalyptic number.

It is an amenable number.

28767277 is a deficient number, since it is larger than the sum of its proper divisors (7216595).

28767277 is a wasteful number, since it uses less digits than its factorization.

28767277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

The product of its digits is 460992, while the sum is 46.

The square root of 28767277 is about 5363.5134939702. The cubic root of 28767277 is about 306.4076366297.

It can be divided in two parts, 2876 and 7277, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 28767277 in words is "twenty-eight million, seven hundred sixty-seven thousand, two hundred seventy-seven".