16989562 has 8 divisors (see below), whose sum is σ = 26983476. Its totient is φ = 7995072.

The previous prime is 16989547. The next prime is 16989569. The reversal of 16989562 is 26598961.

It can be written as a sum of positive squares in 2 ways, for example, as 14130081 + 2859481 = 3759^2 + 1691^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16989569) 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, 249813 + ... + 249880.

Almost surely, 2^16989562 is an apocalyptic number.

16989562 is a deficient number, since it is larger than the sum of its proper divisors (9993914).

16989562 is a wasteful number, since it uses less digits than its factorization.

16989562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499712.

The product of its digits is 233280, while the sum is 46.

The square root of 16989562 is about 4121.8396378316. The cubic root of 16989562 is about 257.0755227282.

The spelling of 16989562 in words is "sixteen million, nine hundred eighty-nine thousand, five hundred sixty-two".