16986996 has 120 divisors (see below), whose sum is σ = 49566440. Its totient is φ = 5038848.

The previous prime is 16986989. The next prime is 16987001. The reversal of 16986996 is 69968961.

It can be written as a sum of positive squares in 4 ways, for example, as 4284900 + 12702096 = 2070^2 + 3564^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 155790 + ... + 155898.

Almost surely, 2^16986996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16986996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24783220).

16986996 is an abundant number, since it is smaller than the sum of its proper divisors (32579444).

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

16986996 is a wasteful number, since it uses less digits than its factorization.

16986996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 164 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 16986996 is about 4121.5283572966. The cubic root of 16986996 is about 257.0625797027.

The spelling of 16986996 in words is "sixteen million, nine hundred eighty-six thousand, nine hundred ninety-six".