108135612 has 72 divisors (see below), whose sum is σ = 309887760. Its totient is φ = 31518720.

The previous prime is 108135611. The next prime is 108135649. The reversal of 108135612 is 216531801.

108135612 is a `hidden beast` number, since 10 + 8 + 1 + 35 + 612 = 666.

It is a super-2 number, since 2×108135612² = 23386621165229088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108135611) 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, 2812 + ... + 14972.

Almost surely, 2^108135612 is an apocalyptic number.

108135612 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 108135612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154943880).

108135612 is an abundant number, since it is smaller than the sum of its proper divisors (201752148).

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

108135612 is a wasteful number, since it uses less digits than its factorization.

108135612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12203 (or 12198 counting only the distinct ones).

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

The square root of 108135612 is about 10398.8274338985. The cubic root of 108135612 is about 476.4195568789.

The spelling of 108135612 in words is "one hundred eight million, one hundred thirty-five thousand, six hundred twelve".