16855992 has 64 divisors (see below), whose sum is σ = 47508000. Its totient is φ = 5536512.

The previous prime is 16855967. The next prime is 16855999. The reversal of 16855992 is 29955861.

16855992 is a `hidden beast` number, since 1 + 6 + 8 + 559 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15234 + ... + 16302.

Almost surely, 2^16855992 is an apocalyptic number.

16855992 is a gapful number since it is divisible by the number (12) 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 16855992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23754000).

16855992 is an abundant number, since it is smaller than the sum of its proper divisors (30652008).

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

16855992 is a wasteful number, since it uses less digits than its factorization.

16855992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1147 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 16855992 is about 4105.6049493345. The cubic root of 16855992 is about 256.4000499739.

The spelling of 16855992 in words is "sixteen million, eight hundred fifty-five thousand, nine hundred ninety-two".