16989120 has 168 divisors, whose sum is σ = 62051184. Its totient is φ = 4251648.

The previous prime is 16989113. The next prime is 16989143. The reversal of 16989120 is 2198961.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48787 + ... + 49133.

Almost surely, 2^16989120 is an apocalyptic number.

16989120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16989120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31025592).

16989120 is an abundant number, since it is smaller than the sum of its proper divisors (45062064).

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

16989120 is a wasteful number, since it uses less digits than its factorization.

16989120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 374 counting only the distinct ones).

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

The square root of 16989120 is about 4121.7860206469. The cubic root of 16989120 is about 257.0732933522.

The spelling of 16989120 in words is "sixteen million, nine hundred eighty-nine thousand, one hundred twenty".