26398986 has 16 divisors (see below), whose sum is σ = 55093824. Its totient is φ = 8417024.

The previous prime is 26398979. The next prime is 26398987. The reversal of 26398986 is 68989362.

It is not an unprimeable number, because it can be changed into a prime (26398987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95511 + ... + 95786.

It is an arithmetic number, because the mean of its divisors is an integer number (3443364).

Almost surely, 2^26398986 is an apocalyptic number.

26398986 is an abundant number, since it is smaller than the sum of its proper divisors (28694838).

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

26398986 is a wasteful number, since it uses less digits than its factorization.

26398986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191325.

The product of its digits is 1119744, while the sum is 51.

The square root of 26398986 is about 5137.9943557774. The cubic root of 26398986 is about 297.7572982974.

The spelling of 26398986 in words is "twenty-six million, three hundred ninety-eight thousand, nine hundred eighty-six".