83128027 has 2 divisors, whose sum is σ = 83128028. Its totient is φ = 83128026.

The previous prime is 83128013. The next prime is 83128061. The reversal of 83128027 is 72082138.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83128027 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83128027.

It is not a weakly prime, because it can be changed into another prime (83128427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41564013 + 41564014.

It is an arithmetic number, because the mean of its divisors is an integer number (41564014).

Almost surely, 2^83128027 is an apocalyptic number.

83128027 is a deficient number, since it is larger than the sum of its proper divisors (1).

83128027 is an equidigital number, since it uses as much as digits as its factorization.

83128027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 83128027 is about 9117.4572661461. The cubic root of 83128027 is about 436.4312341840.

The spelling of 83128027 in words is "eighty-three million, one hundred twenty-eight thousand, twenty-seven".