26824981 has 2 divisors, whose sum is σ = 26824982. Its totient is φ = 26824980.

The previous prime is 26824939. The next prime is 26825021. The reversal of 26824981 is 18942862.

It is an a-pointer prime, because the next prime (26825021) can be obtained adding 26824981 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24344356 + 2480625 = 4934^2 + 1575^2 .

It is a cyclic number.

It is not a de Polignac number, because 26824981 - 2¹³ = 26816789 is a prime.

It is a super-2 number, since 2×26824981² = 1439159211300722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26824901) 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 as a sum of consecutive naturals, namely, 13412490 + 13412491.

It is an arithmetic number, because the mean of its divisors is an integer number (13412491).

Almost surely, 2^26824981 is an apocalyptic number.

It is an amenable number.

26824981 is a deficient number, since it is larger than the sum of its proper divisors (1).

26824981 is an equidigital number, since it uses as much as digits as its factorization.

26824981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 26824981 is about 5179.2838308013. The cubic root of 26824981 is about 299.3503757915.

The spelling of 26824981 in words is "twenty-six million, eight hundred twenty-four thousand, nine hundred eighty-one".