16909120 has 56 divisors (see below), whose sum is σ = 41065704. Its totient is φ = 6629376.

The previous prime is 16909093. The next prime is 16909133. The reversal of 16909120 is 2190961.

It can be written as a sum of positive squares in 4 ways, for example, as 5992704 + 10916416 = 2448^2 + 3304^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16462 + ... + 17458.

Almost surely, 2^16909120 is an apocalyptic number.

16909120 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 16909120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20532852).

16909120 is an abundant number, since it is smaller than the sum of its proper divisors (24156584).

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

16909120 is an equidigital number, since it uses as much as digits as its factorization.

16909120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 16909120 is about 4112.0700383140. The cubic root of 16909120 is about 256.6691478556.

The spelling of 16909120 in words is "sixteen million, nine hundred nine thousand, one hundred twenty".