128282369 has 2 divisors, whose sum is σ = 128282370. Its totient is φ = 128282368.

The previous prime is 128282353. The next prime is 128282381. The reversal of 128282369 is 963282821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 62995969 = 8080^2 + 7937^2 .

It is a cyclic number.

It is not a de Polignac number, because 128282369 - 2⁴ = 128282353 is a prime.

It is a super-3 number, since 3×128282369³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (128282269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64141184 + 64141185.

It is an arithmetic number, because the mean of its divisors is an integer number (64141185).

Almost surely, 2^128282369 is an apocalyptic number.

It is an amenable number.

128282369 is a deficient number, since it is larger than the sum of its proper divisors (1).

128282369 is an equidigital number, since it uses as much as digits as its factorization.

128282369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 128282369 is about 11326.1806890055. The cubic root of 128282369 is about 504.3387338767.

The spelling of 128282369 in words is "one hundred twenty-eight million, two hundred eighty-two thousand, three hundred sixty-nine".