16989210 has 128 divisors (see below), whose sum is σ = 52876800. Its totient is φ = 3801600.

The previous prime is 16989199. The next prime is 16989229. The reversal of 16989210 is 1298961.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168160 + ... + 168260.

It is an arithmetic number, because the mean of its divisors is an integer number (413100).

Almost surely, 2^16989210 is an apocalyptic number.

16989210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16989210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26438400).

16989210 is an abundant number, since it is smaller than the sum of its proper divisors (35887590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16989210 is a wasteful number, since it uses less digits than its factorization.

16989210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 16989210 is about 4121.7969382297. The cubic root of 16989210 is about 257.0737473007.

The spelling of 16989210 in words is "sixteen million, nine hundred eighty-nine thousand, two hundred ten".