16289287 has 16 divisors (see below), whose sum is σ = 19328320. Its totient is φ = 13436928.

The previous prime is 16289261. The next prime is 16289309. The reversal of 16289287 is 78298261.

16289287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 11-Lehmer number, since φ(16289287) divides (16289287-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 16289287 - 2⁷ = 16289159 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 (16289087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27943 + ... + 28519.

It is an arithmetic number, because the mean of its divisors is an integer number (1208020).

Almost surely, 2^16289287 is an apocalyptic number.

16289287 is a deficient number, since it is larger than the sum of its proper divisors (3039033).

16289287 is a wasteful number, since it uses less digits than its factorization.

16289287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730.

The product of its digits is 96768, while the sum is 43.

The square root of 16289287 is about 4035.9988850345. The cubic root of 16289287 is about 253.4938097191.

The spelling of 16289287 in words is "sixteen million, two hundred eighty-nine thousand, two hundred eighty-seven".