71128193 has 2 divisors, whose sum is σ = 71128194. Its totient is φ = 71128192.

The previous prime is 71128181. The next prime is 71128219. The reversal of 71128193 is 39182117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47430769 + 23697424 = 6887^2 + 4868^2 .

It is a cyclic number.

It is not a de Polignac number, because 71128193 - 2¹⁶ = 71062657 is a prime.

It is equal to p_4180469 and since 71128193 and 4180469 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (71128103) 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, 35564096 + 35564097.

It is an arithmetic number, because the mean of its divisors is an integer number (35564097).

Almost surely, 2^71128193 is an apocalyptic number.

It is an amenable number.

71128193 is a deficient number, since it is larger than the sum of its proper divisors (1).

71128193 is an equidigital number, since it uses as much as digits as its factorization.

71128193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 71128193 is about 8433.7531977169. The cubic root of 71128193 is about 414.3308381799.

The spelling of 71128193 in words is "seventy-one million, one hundred twenty-eight thousand, one hundred ninety-three".