16990236 has 60 divisors (see below), whose sum is σ = 45534720. Its totient is φ = 5520960.

The previous prime is 16990223. The next prime is 16990279. The reversal of 16990236 is 63209961.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16990236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12645 + ... + 13923.

It is an arithmetic number, because the mean of its divisors is an integer number (758912).

Almost surely, 2^16990236 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 16990236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22767360).

16990236 is an abundant number, since it is smaller than the sum of its proper divisors (28544484).

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

16990236 is a wasteful number, since it uses less digits than its factorization.

16990236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 16990236 is about 4121.9213966305. The cubic root of 16990236 is about 257.0789222000.

The spelling of 16990236 in words is "sixteen million, nine hundred ninety thousand, two hundred thirty-six".