16389686 has 8 divisors (see below), whose sum is σ = 24690744. Its totient is φ = 8159440.

The previous prime is 16389679. The next prime is 16389689. The reversal of 16389686 is 68698361.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16389686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16389689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17120 + ... + 18051.

It is an arithmetic number, because the mean of its divisors is an integer number (3086343).

Almost surely, 2^16389686 is an apocalyptic number.

16389686 is a deficient number, since it is larger than the sum of its proper divisors (8301058).

16389686 is a wasteful number, since it uses less digits than its factorization.

16389686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35406.

The product of its digits is 373248, while the sum is 47.

The square root of 16389686 is about 4048.4177156020. The cubic root of 16389686 is about 254.0135463046.

The spelling of 16389686 in words is "sixteen million, three hundred eighty-nine thousand, six hundred eighty-six".