26890866 has 24 divisors (see below), whose sum is σ = 60422544. Its totient is φ = 8963460.

The previous prime is 26890849. The next prime is 26890879. The reversal of 26890866 is 66809862.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27180 + ... + 28151.

It is an arithmetic number, because the mean of its divisors is an integer number (2517606).

Almost surely, 2^26890866 is an apocalyptic number.

26890866 is an abundant number, since it is smaller than the sum of its proper divisors (33531678).

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

26890866 is an equidigital number, since it uses as much as digits as its factorization.

26890866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55348 (or 55336 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 26890866 is about 5185.6403654708. The cubic root of 26890866 is about 299.5952541816.

The spelling of 26890866 in words is "twenty-six million, eight hundred ninety thousand, eight hundred sixty-six".