16545216 has 112 divisors (see below), whose sum is σ = 47951136. Its totient is φ = 5013504.

The previous prime is 16545209. The next prime is 16545223. The reversal of 16545216 is 61254561.

It is an interprime number because it is at equal distance from previous prime (16545209) and next prime (16545223).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120700 + ... + 120836.

Almost surely, 2^16545216 is an apocalyptic number.

16545216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16545216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23975568).

16545216 is an abundant number, since it is smaller than the sum of its proper divisors (31405920).

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

16545216 is a wasteful number, since it uses less digits than its factorization.

16545216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 196 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 16545216 is about 4067.5810993759. The cubic root of 16545216 is about 254.8145056216.

Adding to 16545216 its reverse (61254561), we get a palindrome (77799777).

It can be divided in two parts, 16545 and 216, that added together give a palindrome (16761).

The spelling of 16545216 in words is "sixteen million, five hundred forty-five thousand, two hundred sixteen".