135408868 has 48 divisors (see below), whose sum is σ = 283515904. Its totient is φ = 55365120.

The previous prime is 135408853. The next prime is 135408869. The reversal of 135408868 is 868804531.

It is not an unprimeable number, because it can be changed into a prime (135408869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62296 + ... + 64432.

Almost surely, 2^135408868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135408868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141757952).

135408868 is an abundant number, since it is smaller than the sum of its proper divisors (148107036).

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

135408868 is a wasteful number, since it uses less digits than its factorization.

135408868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2250 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 135408868 is about 11636.5316138444. The cubic root of 135408868 is about 513.5101542243.

The spelling of 135408868 in words is "one hundred thirty-five million, four hundred eight thousand, eight hundred sixty-eight".