16673994 has 24 divisors (see below), whose sum is σ = 36375300. Its totient is φ = 5519808.

The previous prime is 16673983. The next prime is 16673999. The reversal of 16673994 is 49937661.

It can be written as a sum of positive squares in 2 ways, for example, as 16524225 + 149769 = 4065^2 + 387^2 .

It is not an unprimeable number, because it can be changed into a prime (16673999) 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, 427 + ... + 5790.

Almost surely, 2^16673994 is an apocalyptic number.

16673994 is an abundant number, since it is smaller than the sum of its proper divisors (19701306).

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

16673994 is a wasteful number, since it uses less digits than its factorization.

16673994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6374 (or 6371 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 16673994 is about 4083.3802174179. The cubic root of 16673994 is about 255.4739053444.

The spelling of 16673994 in words is "sixteen million, six hundred seventy-three thousand, nine hundred ninety-four".