16805212 has 6 divisors (see below), whose sum is σ = 29409128. Its totient is φ = 8402604.

The previous prime is 16805209. The next prime is 16805219. The reversal of 16805212 is 21250861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2100648 + ... + 2100655.

Almost surely, 2^16805212 is an apocalyptic number.

It is an amenable number.

16805212 is a deficient number, since it is larger than the sum of its proper divisors (12603916).

16805212 is a wasteful number, since it uses less digits than its factorization.

16805212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201307 (or 4201305 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 16805212 is about 4099.4160559768. The cubic root of 16805212 is about 256.1423158884.

The spelling of 16805212 in words is "sixteen million, eight hundred five thousand, two hundred twelve".