16028887 has 4 divisors (see below), whose sum is σ = 18318736. Its totient is φ = 13739040.

The previous prime is 16028869. The next prime is 16028899. The reversal of 16028887 is 78882061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78882061 = 1109 ⋅71129.

It is not a de Polignac number, because 16028887 - 2²³ = 7640279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16028867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144914 + ... + 1144927.

It is an arithmetic number, because the mean of its divisors is an integer number (4579684).

Almost surely, 2^16028887 is an apocalyptic number.

16028887 is a deficient number, since it is larger than the sum of its proper divisors (2289849).

16028887 is an equidigital number, since it uses as much as digits as its factorization.

16028887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289848.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 16028887 is about 4003.6092466673. The cubic root of 16028887 is about 252.1357660546.

The spelling of 16028887 in words is "sixteen million, twenty-eight thousand, eight hundred eighty-seven".