26686138 has 8 divisors (see below), whose sum is σ = 40239360. Its totient is φ = 13273020.

The previous prime is 26686117. The next prime is 26686157. The reversal of 26686138 is 83168662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×26686138² = 1424299922710088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26686138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34548 + ... + 35311.

It is an arithmetic number, because the mean of its divisors is an integer number (5029920).

Almost surely, 2^26686138 is an apocalyptic number.

26686138 is a deficient number, since it is larger than the sum of its proper divisors (13553222).

26686138 is a wasteful number, since it uses less digits than its factorization.

26686138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70052.

The product of its digits is 82944, while the sum is 40.

The square root of 26686138 is about 5165.8627546616. The cubic root of 26686138 is about 298.8330145173.

The spelling of 26686138 in words is "twenty-six million, six hundred eighty-six thousand, one hundred thirty-eight".