16873866 has 32 divisors (see below), whose sum is σ = 37929600. Its totient is φ = 5559840.

The previous prime is 16873783. The next prime is 16873867. The reversal of 16873866 is 66837861.

It is not an unprimeable number, because it can be changed into a prime (16873867) 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, 3051 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (1185300).

Almost surely, 2^16873866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16873866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18964800).

16873866 is an abundant number, since it is smaller than the sum of its proper divisors (21055734).

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

16873866 is a wasteful number, since it uses less digits than its factorization.

16873866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611 (or 3605 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 16873866 is about 4107.7811528853. The cubic root of 16873866 is about 256.4906463536.

The spelling of 16873866 in words is "sixteen million, eight hundred seventy-three thousand, eight hundred sixty-six".