16855384 has 64 divisors (see below), whose sum is σ = 39412800. Its totient is φ = 6619392.

The previous prime is 16855373. The next prime is 16855393. The reversal of 16855384 is 48355861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122964 + ... + 123100.

It is an arithmetic number, because the mean of its divisors is an integer number (615825).

Almost surely, 2^16855384 is an apocalyptic number.

16855384 is a gapful number since it is divisible by the number (14) 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 16855384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19706400).

16855384 is an abundant number, since it is smaller than the sum of its proper divisors (22557416).

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

16855384 is a wasteful number, since it uses less digits than its factorization.

16855384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 159 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 16855384 is about 4105.5309035495. The cubic root of 16855384 is about 256.3969671314.

The spelling of 16855384 in words is "sixteen million, eight hundred fifty-five thousand, three hundred eighty-four".