26827993 has 2 divisors, whose sum is σ = 26827994. Its totient is φ = 26827992.

The previous prime is 26827991. The next prime is 26828029. The reversal of 26827993 is 39972862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13483584 + 13344409 = 3672^2 + 3653^2 .

It is a cyclic number.

It is not a de Polignac number, because 26827993 - 2¹ = 26827991 is a prime.

Together with 26827991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26827991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13413996 + 13413997.

It is an arithmetic number, because the mean of its divisors is an integer number (13413997).

Almost surely, 2^26827993 is an apocalyptic number.

It is an amenable number.

26827993 is a deficient number, since it is larger than the sum of its proper divisors (1).

26827993 is an equidigital number, since it uses as much as digits as its factorization.

26827993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 26827993 is about 5179.5745964316. The cubic root of 26827993 is about 299.3615793979.

The spelling of 26827993 in words is "twenty-six million, eight hundred twenty-seven thousand, nine hundred ninety-three".