26836981 has 2 divisors, whose sum is σ = 26836982. Its totient is φ = 26836980.

The previous prime is 26836969. The next prime is 26836993. The reversal of 26836981 is 18963862.

It is a balanced prime because it is at equal distance from previous prime (26836969) and next prime (26836993).

It can be written as a sum of positive squares in only one way, i.e., 17926756 + 8910225 = 4234^2 + 2985^2 .

It is a cyclic number.

It is not a de Polignac number, because 26836981 - 2¹⁷ = 26705909 is a prime.

It is a super-2 number, since 2×26836981² = 1440447098388722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26836961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13418490 + 13418491.

It is an arithmetic number, because the mean of its divisors is an integer number (13418491).

Almost surely, 2^26836981 is an apocalyptic number.

It is an amenable number.

26836981 is a deficient number, since it is larger than the sum of its proper divisors (1).

26836981 is an equidigital number, since it uses as much as digits as its factorization.

26836981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 26836981 is about 5180.4421625958. The cubic root of 26836981 is about 299.3950066897.

It can be divided in two parts, 268 and 36981, that added together give a square (37249 = 193²).

The spelling of 26836981 in words is "twenty-six million, eight hundred thirty-six thousand, nine hundred eighty-one".