26078881 has 2 divisors, whose sum is σ = 26078882. Its totient is φ = 26078880.

The previous prime is 26078863. The next prime is 26078893. The reversal of 26078881 is 18887062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22896225 + 3182656 = 4785^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 26078881 - 2⁷ = 26078753 is a prime.

It is a super-2 number, since 2×26078881² = 1360216068424322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26078831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13039440 + 13039441.

It is an arithmetic number, because the mean of its divisors is an integer number (13039441).

Almost surely, 2^26078881 is an apocalyptic number.

It is an amenable number.

26078881 is a deficient number, since it is larger than the sum of its proper divisors (1).

26078881 is an equidigital number, since it uses as much as digits as its factorization.

26078881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 26078881 is about 5106.7485741908. The cubic root of 26078881 is about 296.5489000789.

The spelling of 26078881 in words is "twenty-six million, seventy-eight thousand, eight hundred eighty-one".