15328387 has 2 divisors, whose sum is σ = 15328388. Its totient is φ = 15328386.

The previous prime is 15328333. The next prime is 15328393. The reversal of 15328387 is 78382351.

15328387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15328387 - 2¹⁵ = 15295619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15328087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664193 + 7664194.

It is an arithmetic number, because the mean of its divisors is an integer number (7664194).

Almost surely, 2^15328387 is an apocalyptic number.

15328387 is a deficient number, since it is larger than the sum of its proper divisors (1).

15328387 is an equidigital number, since it uses as much as digits as its factorization.

15328387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 15328387 is about 3915.1484007634. The cubic root of 15328387 is about 248.4079469903.

The spelling of 15328387 in words is "fifteen million, three hundred twenty-eight thousand, three hundred eighty-seven".