16805900 has 36 divisors (see below), whose sum is σ = 37367400. Its totient is φ = 6556800.

The previous prime is 16805891. The next prime is 16805903. The reversal of 16805900 is 950861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2051 + ... + 6149.

Almost surely, 2^16805900 is an apocalyptic number.

16805900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 4099×4100.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16805900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18683700).

16805900 is an abundant number, since it is smaller than the sum of its proper divisors (20561500).

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

16805900 is a wasteful number, since it uses less digits than its factorization.

16805900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154 (or 4147 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 16805900 is about 4099.4999695085. The cubic root of 16805900 is about 256.1458113022.

The spelling of 16805900 in words is "sixteen million, eight hundred five thousand, nine hundred".