15128369 has 2 divisors, whose sum is σ = 15128370. Its totient is φ = 15128368.

The previous prime is 15128359. The next prime is 15128413. The reversal of 15128369 is 96382151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15108769 + 19600 = 3887^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 15128369 - 2⁴ = 15128353 is a prime.

It is a super-2 number, since 2×15128369² = 457735097200322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15128329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7564184 + 7564185.

It is an arithmetic number, because the mean of its divisors is an integer number (7564185).

Almost surely, 2^15128369 is an apocalyptic number.

It is an amenable number.

15128369 is a deficient number, since it is larger than the sum of its proper divisors (1).

15128369 is an equidigital number, since it uses as much as digits as its factorization.

15128369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 15128369 is about 3889.5204074539. The cubic root of 15128369 is about 247.3227326379.

The spelling of 15128369 in words is "fifteen million, one hundred twenty-eight thousand, three hundred sixty-nine".