26956381 has 2 divisors, whose sum is σ = 26956382. Its totient is φ = 26956380.

The previous prime is 26956379. The next prime is 26956471. The reversal of 26956381 is 18365962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24661156 + 2295225 = 4966^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 26956381 - 2¹ = 26956379 is a prime.

It is a super-2 number, since 2×26956381² = 1453292953234322, which contains 22 as substring.

Together with 26956379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26956331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13478190 + 13478191.

It is an arithmetic number, because the mean of its divisors is an integer number (13478191).

Almost surely, 2^26956381 is an apocalyptic number.

It is an amenable number.

26956381 is a deficient number, since it is larger than the sum of its proper divisors (1).

26956381 is an equidigital number, since it uses as much as digits as its factorization.

26956381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 26956381 is about 5191.9534859242. The cubic root of 26956381 is about 299.8383610733.

The spelling of 26956381 in words is "twenty-six million, nine hundred fifty-six thousand, three hundred eighty-one".