16180216 has 16 divisors (see below), whose sum is σ = 32671800. Its totient is φ = 7467744.

The previous prime is 16180193. The next prime is 16180217. The reversal of 16180216 is 61208161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16180217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77686 + ... + 77893.

Almost surely, 2^16180216 is an apocalyptic number.

It is an amenable number.

16180216 is an abundant number, since it is smaller than the sum of its proper divisors (16491584).

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

16180216 is a wasteful number, since it uses less digits than its factorization.

16180216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155598 (or 155594 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 16180216 is about 4022.4639215287. The cubic root of 16180216 is about 252.9267547192.

Adding to 16180216 its reverse (61208161), we get a palindrome (77388377).

The spelling of 16180216 in words is "sixteen million, one hundred eighty thousand, two hundred sixteen".