16958216 has 32 divisors (see below), whose sum is σ = 35030880. Its totient is φ = 7632000.

The previous prime is 16958213. The next prime is 16958233. The reversal of 16958216 is 61285961.

It is a self number, because there is not a number n which added to its sum of digits gives 16958216.

It is not an unprimeable number, because it can be changed into a prime (16958213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8516 + ... + 10316.

It is an arithmetic number, because the mean of its divisors is an integer number (1094715).

Almost surely, 2^16958216 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 16958216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17515440).

16958216 is an abundant number, since it is smaller than the sum of its proper divisors (18072664).

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

16958216 is a wasteful number, since it uses less digits than its factorization.

16958216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925 (or 1921 counting only the distinct ones).

The product of its digits is 25920, while the sum is 38.

The square root of 16958216 is about 4118.0354539513. The cubic root of 16958216 is about 256.9173226461.

It can be divided in two parts, 169 and 58216, that added together give a palindrome (58385).

The spelling of 16958216 in words is "sixteen million, nine hundred fifty-eight thousand, two hundred sixteen".