16128887 has 2 divisors, whose sum is σ = 16128888. Its totient is φ = 16128886.

The previous prime is 16128883. The next prime is 16128941. The reversal of 16128887 is 78882161.

It is a weak prime.

It is an emirp because it is prime and its reverse (78882161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16128887 - 2² = 16128883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16128883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8064443 + 8064444.

It is an arithmetic number, because the mean of its divisors is an integer number (8064444).

Almost surely, 2^16128887 is an apocalyptic number.

16128887 is a deficient number, since it is larger than the sum of its proper divisors (1).

16128887 is an equidigital number, since it uses as much as digits as its factorization.

16128887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 41.

The square root of 16128887 is about 4016.0785599886. The cubic root of 16128887 is about 252.6590156095.

The spelling of 16128887 in words is "sixteen million, one hundred twenty-eight thousand, eight hundred eighty-seven".