26286681 has 16 divisors (see below), whose sum is σ = 35703360. Its totient is φ = 17200320.

The previous prime is 26286647. The next prime is 26286691. The reversal of 26286681 is 18668262.

It is not a de Polignac number, because 26286681 - 2⁷ = 26286553 is a prime.

It is a super-2 number, since 2×26286681² = 1381979195991522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26286691) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 56791 + ... + 57251.

It is an arithmetic number, because the mean of its divisors is an integer number (2231460).

Almost surely, 2^26286681 is an apocalyptic number.

It is an amenable number.

26286681 is a deficient number, since it is larger than the sum of its proper divisors (9416679).

26286681 is a wasteful number, since it uses less digits than its factorization.

26286681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its digits is 55296, while the sum is 39.

The square root of 26286681 is about 5127.0538323681. The cubic root of 26286681 is about 297.3344643201.

The spelling of 26286681 in words is "twenty-six million, two hundred eighty-six thousand, six hundred eighty-one".