26788493 has 2 divisors, whose sum is σ = 26788494. Its totient is φ = 26788492.

The previous prime is 26788471. The next prime is 26788501. The reversal of 26788493 is 39488762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24186724 + 2601769 = 4918^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 26788493 - 2⁶ = 26788429 is a prime.

It is a super-2 number, since 2×26788493² = 1435246714422098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26788403) 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, 13394246 + 13394247.

It is an arithmetic number, because the mean of its divisors is an integer number (13394247).

Almost surely, 2^26788493 is an apocalyptic number.

It is an amenable number.

26788493 is a deficient number, since it is larger than the sum of its proper divisors (1).

26788493 is an equidigital number, since it uses as much as digits as its factorization.

26788493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 26788493 is about 5175.7601374098. The cubic root of 26788493 is about 299.2145862862.

The spelling of 26788493 in words is "twenty-six million, seven hundred eighty-eight thousand, four hundred ninety-three".