28086135 has 32 divisors (see below), whose sum is σ = 56028672. Its totient is φ = 11671680.

The previous prime is 28086127. The next prime is 28086137. The reversal of 28086135 is 53168082.

It is a happy number.

It is not a de Polignac number, because 28086135 - 2³ = 28086127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 28086096 and 28086105.

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 in 31 ways as a sum of consecutive naturals, for example, 11004 + ... + 13313.

It is an arithmetic number, because the mean of its divisors is an integer number (1750896).

Almost surely, 2^28086135 is an apocalyptic number.

28086135 is a deficient number, since it is larger than the sum of its proper divisors (27942537).

28086135 is a wasteful number, since it uses less digits than its factorization.

28086135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24343.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28086135 is about 5299.6353648152. The cubic root of 28086135 is about 303.9699553352.

The spelling of 28086135 in words is "twenty-eight million, eighty-six thousand, one hundred thirty-five".