27928133 has 2 divisors, whose sum is σ = 27928134. Its totient is φ = 27928132.

The previous prime is 27928129. The next prime is 27928139. The reversal of 27928133 is 33182972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19731364 + 8196769 = 4442^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 27928133 - 2² = 27928129 is a prime.

It is a super-2 number, since 2×27928133² = 1559961225731378, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27928093 and 27928102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27928139) 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, 13964066 + 13964067.

It is an arithmetic number, because the mean of its divisors is an integer number (13964067).

Almost surely, 2^27928133 is an apocalyptic number.

It is an amenable number.

27928133 is a deficient number, since it is larger than the sum of its proper divisors (1).

27928133 is an equidigital number, since it uses as much as digits as its factorization.

27928133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 27928133 is about 5284.7074658868. The cubic root of 27928133 is about 303.3988763357.

The spelling of 27928133 in words is "twenty-seven million, nine hundred twenty-eight thousand, one hundred thirty-three".