135218268 has 24 divisors (see below), whose sum is σ = 350566160. Its totient is φ = 45072720.

The previous prime is 135218257. The next prime is 135218341. The reversal of 135218268 is 862812531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 625903 + ... + 626118.

Almost surely, 2^135218268 is an apocalyptic number.

135218268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135218268 is an abundant number, since it is smaller than the sum of its proper divisors (215347892).

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

135218268 is a wasteful number, since it uses less digits than its factorization.

135218268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252034 (or 1252026 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 135218268 is about 11628.3390043462. The cubic root of 135218268 is about 513.2691040494.

The spelling of 135218268 in words is "one hundred thirty-five million, two hundred eighteen thousand, two hundred sixty-eight".