16487889 has 8 divisors (see below), whose sum is σ = 23982432. Its totient is φ = 9992640.

The previous prime is 16487881. The next prime is 16487923. The reversal of 16487889 is 98878461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16487889 - 2³ = 16487881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16487881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249784 + ... + 249849.

It is an arithmetic number, because the mean of its divisors is an integer number (2997804).

Almost surely, 2^16487889 is an apocalyptic number.

It is an amenable number.

16487889 is a deficient number, since it is larger than the sum of its proper divisors (7494543).

16487889 is a wasteful number, since it uses less digits than its factorization.

16487889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499647.

The product of its digits is 774144, while the sum is 51.

The square root of 16487889 is about 4060.5281676156. The cubic root of 16487889 is about 254.5198654665.

The spelling of 16487889 in words is "sixteen million, four hundred eighty-seven thousand, eight hundred eighty-nine".