28086267 has 16 divisors (see below), whose sum is σ = 41804928. Its totient is φ = 16625280.

The previous prime is 28086257. The next prime is 28086281. The reversal of 28086267 is 76268082.

It is not a de Polignac number, because 28086267 - 2⁶ = 28086203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28086257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8478 + ... + 11315.

It is an arithmetic number, because the mean of its divisors is an integer number (2612808).

Almost surely, 2^28086267 is an apocalyptic number.

28086267 is a deficient number, since it is larger than the sum of its proper divisors (13718661).

28086267 is a wasteful number, since it uses less digits than its factorization.

28086267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28086267 is about 5299.6478184876. The cubic root of 28086267 is about 303.9704315366.

The spelling of 28086267 in words is "twenty-eight million, eighty-six thousand, two hundred sixty-seven".