26828491 has 2 divisors, whose sum is σ = 26828492. Its totient is φ = 26828490.

The previous prime is 26828453. The next prime is 26828507. The reversal of 26828491 is 19482862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26828491 - 2²¹ = 24731339 is a prime.

It is not a weakly prime, because it can be changed into another prime (26828401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13414245 + 13414246.

It is an arithmetic number, because the mean of its divisors is an integer number (13414246).

Almost surely, 2^26828491 is an apocalyptic number.

26828491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26828491 is an equidigital number, since it uses as much as digits as its factorization.

26828491 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 26828491 is about 5179.6226696546. The cubic root of 26828491 is about 299.3634317062.

The spelling of 26828491 in words is "twenty-six million, eight hundred twenty-eight thousand, four hundred ninety-one".