26728291 has 2 divisors, whose sum is σ = 26728292. Its totient is φ = 26728290.

The previous prime is 26728249. The next prime is 26728333. The reversal of 26728291 is 19282762.

It is a balanced prime because it is at equal distance from previous prime (26728249) and next prime (26728333).

It is a cyclic number.

It is not a de Polignac number, because 26728291 - 2¹¹ = 26726243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26728291.

It is not a weakly prime, because it can be changed into another prime (26728211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13364145 + 13364146.

It is an arithmetic number, because the mean of its divisors is an integer number (13364146).

Almost surely, 2^26728291 is an apocalyptic number.

26728291 is a deficient number, since it is larger than the sum of its proper divisors (1).

26728291 is an equidigital number, since it uses as much as digits as its factorization.

26728291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 26728291 is about 5169.9411021790. The cubic root of 26728291 is about 298.9902757060.

The spelling of 26728291 in words is "twenty-six million, seven hundred twenty-eight thousand, two hundred ninety-one".