16518312 has 48 divisors (see below), whose sum is σ = 45482580. Its totient is φ = 5414400.

The previous prime is 16518287. The next prime is 16518323. The reversal of 16518312 is 21381561.

16518312 is a `hidden beast` number, since 1 + 651 + 8 + 3 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14791716 + 1726596 = 3846^2 + 1314^2 .

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 11 ways as a sum of consecutive naturals, for example, 2512 + ... + 6272.

Almost surely, 2^16518312 is an apocalyptic number.

16518312 is a gapful number since it is divisible by the number (12) 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 16518312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22741290).

16518312 is an abundant number, since it is smaller than the sum of its proper divisors (28964268).

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

16518312 is a wasteful number, since it uses less digits than its factorization.

16518312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834 (or 3827 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 16518312 is about 4064.2726286508. The cubic root of 16518312 is about 254.6763136367.

Adding to 16518312 its reverse (21381561), we get a palindrome (37899873).

The spelling of 16518312 in words is "sixteen million, five hundred eighteen thousand, three hundred twelve".