28086266 has 32 divisors (see below), whose sum is σ = 48117888. Its totient is φ = 12196800.

The previous prime is 28086257. The next prime is 28086281. The reversal of 28086266 is 66268082.

It is a Curzon number.

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, 39716 + ... + 40416.

It is an arithmetic number, because the mean of its divisors is an integer number (1503684).

Almost surely, 2^28086266 is an apocalyptic number.

28086266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28086266 is a deficient number, since it is larger than the sum of its proper divisors (20031622).

28086266 is a wasteful number, since it uses less digits than its factorization.

28086266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 28086266 is about 5299.6477241417. The cubic root of 28086266 is about 303.9704279291.

The spelling of 28086266 in words is "twenty-eight million, eighty-six thousand, two hundred sixty-six".