16135812 has 72 divisors (see below), whose sum is σ = 50860992. Its totient is φ = 4190400.

The previous prime is 16135799. The next prime is 16135813. The reversal of 16135812 is 21853161.

16135812 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16135813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139 + ... + 5682.

Almost surely, 2^16135812 is an apocalyptic number.

16135812 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 16135812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25430496).

16135812 is an abundant number, since it is smaller than the sum of its proper divisors (34725180).

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

16135812 is a wasteful number, since it uses less digits than its factorization.

16135812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849 (or 5844 counting only the distinct ones).

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

The square root of 16135812 is about 4016.9406268951. The cubic root of 16135812 is about 252.6951704774.

Adding to 16135812 its reverse (21853161), we get a palindrome (37988973).

The spelling of 16135812 in words is "sixteen million, one hundred thirty-five thousand, eight hundred twelve".