128736347 has 2 divisors, whose sum is σ = 128736348. Its totient is φ = 128736346.

The previous prime is 128736341. The next prime is 128736353. The reversal of 128736347 is 743637821.

It is a balanced prime because it is at equal distance from previous prime (128736341) and next prime (128736353).

It is a cyclic number.

It is not a de Polignac number, because 128736347 - 2⁴ = 128736331 is a prime.

It is not a weakly prime, because it can be changed into another prime (128736341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64368173 + 64368174.

It is an arithmetic number, because the mean of its divisors is an integer number (64368174).

Almost surely, 2^128736347 is an apocalyptic number.

128736347 is a deficient number, since it is larger than the sum of its proper divisors (1).

128736347 is an equidigital number, since it uses as much as digits as its factorization.

128736347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 128736347 is about 11346.2040788979. The cubic root of 128736347 is about 504.9329676083.

The spelling of 128736347 in words is "one hundred twenty-eight million, seven hundred thirty-six thousand, three hundred forty-seven".