16889980 has 12 divisors (see below), whose sum is σ = 35469000. Its totient is φ = 6755984.

The previous prime is 16889953. The next prime is 16890001. The reversal of 16889980 is 8998861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422230 + ... + 422269.

It is an arithmetic number, because the mean of its divisors is an integer number (2955750).

Almost surely, 2^16889980 is an apocalyptic number.

16889980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16889980 is an abundant number, since it is smaller than the sum of its proper divisors (18579020).

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

16889980 is a wasteful number, since it uses less digits than its factorization.

16889980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844508 (or 844506 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 16889980 is about 4109.7420843649. The cubic root of 16889980 is about 256.5722671534.

The spelling of 16889980 in words is "sixteen million, eight hundred eighty-nine thousand, nine hundred eighty".