16190887 has 4 divisors (see below), whose sum is σ = 16246440. Its totient is φ = 16135336.

The previous prime is 16190843. The next prime is 16190899. The reversal of 16190887 is 78809161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16190887 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16190287) 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, 27337 + ... + 27922.

It is an arithmetic number, because the mean of its divisors is an integer number (4061610).

Almost surely, 2^16190887 is an apocalyptic number.

16190887 is a deficient number, since it is larger than the sum of its proper divisors (55553).

16190887 is an equidigital number, since it uses as much as digits as its factorization.

16190887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55552.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16190887 is about 4023.7901287219. The cubic root of 16190887 is about 252.9823450006.

The spelling of 16190887 in words is "sixteen million, one hundred ninety thousand, eight hundred eighty-seven".