28086134 has 4 divisors (see below), whose sum is σ = 42129204. Its totient is φ = 14043066.

The previous prime is 28086127. The next prime is 28086137. The reversal of 28086134 is 43168082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43168082 = 2 ⋅21584041.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28086134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28086137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7021532 + ... + 7021535.

It is an arithmetic number, because the mean of its divisors is an integer number (10532301).

Almost surely, 2^28086134 is an apocalyptic number.

28086134 is a deficient number, since it is larger than the sum of its proper divisors (14043070).

28086134 is a wasteful number, since it uses less digits than its factorization.

28086134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043069.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28086134 is about 5299.6352704691. The cubic root of 28086134 is about 303.9699517276.

The spelling of 28086134 in words is "twenty-eight million, eighty-six thousand, one hundred thirty-four".