16135218 has 48 divisors (see below), whose sum is σ = 40154400. Its totient is φ = 4631040.

The previous prime is 16135201. The next prime is 16135253. The reversal of 16135218 is 81253161.

16135218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16135191 and 16135200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1618 + ... + 5906.

It is an arithmetic number, because the mean of its divisors is an integer number (836550).

Almost surely, 2^16135218 is an apocalyptic number.

16135218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16135218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20077200).

16135218 is an abundant number, since it is smaller than the sum of its proper divisors (24019182).

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

16135218 is a wasteful number, since it uses less digits than its factorization.

16135218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327 (or 4324 counting only the distinct ones).

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

The square root of 16135218 is about 4016.8666893488. The cubic root of 16135218 is about 252.6920696568.

Adding to 16135218 its reverse (81253161), we get a palindrome (97388379).

The spelling of 16135218 in words is "sixteen million, one hundred thirty-five thousand, two hundred eighteen".