28086426 has 24 divisors (see below), whose sum is σ = 63108864. Its totient is φ = 9361980.

The previous prime is 28086391. The next prime is 28086433. The reversal of 28086426 is 62468082.

28086426 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 642 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28410 + ... + 29381.

It is an arithmetic number, because the mean of its divisors is an integer number (2629536).

Almost surely, 2^28086426 is an apocalyptic number.

28086426 is an abundant number, since it is smaller than the sum of its proper divisors (35022438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28086426 is an equidigital number, since it uses as much as digits as its factorization.

28086426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57808 (or 57796 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 28086426 is about 5299.6628194631. The cubic root of 28086426 is about 303.9710051409.

The spelling of 28086426 in words is "twenty-eight million, eighty-six thousand, four hundred twenty-six".