16990884 has 45 divisors (see below), whose sum is σ = 44612337. Its totient is φ = 5638896.

The previous prime is 16990873. The next prime is 16990889. The reversal of 16990884 is 48809961.

The square root of 16990884 is 4122.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15824484 + 1166400 = 3978^2 + 1080^2 .

It is not an unprimeable number, because it can be changed into a prime (16990889) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 74082 + ... + 74310.

Almost surely, 2^16990884 is an apocalyptic number.

16990884 is the 4122-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16990884

16990884 is an abundant number, since it is smaller than the sum of its proper divisors (27621453).

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

16990884 is an equidigital number, since it uses as much as digits as its factorization.

16990884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The cubic root of 16990884 is about 257.0821904502.

The spelling of 16990884 in words is "sixteen million, nine hundred ninety thousand, eight hundred eighty-four".