16805144 has 16 divisors (see below), whose sum is σ = 31579200. Its totient is φ = 8384032.

The previous prime is 16805119. The next prime is 16805167. The reversal of 16805144 is 44150861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009 + ... + 6135.

It is an arithmetic number, because the mean of its divisors is an integer number (1973700).

Almost surely, 2^16805144 is an apocalyptic number.

It is an amenable number.

16805144 is a deficient number, since it is larger than the sum of its proper divisors (14774056).

16805144 is a wasteful number, since it uses less digits than its factorization.

16805144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4638 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 16805144 is about 4099.4077621042. The cubic root of 16805144 is about 256.1419704063.

The spelling of 16805144 in words is "sixteen million, eight hundred five thousand, one hundred forty-four".