135215768 has 16 divisors (see below), whose sum is σ = 256740000. Its totient is φ = 66751776.

The previous prime is 135215749. The next prime is 135215771. The reversal of 135215768 is 867512531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106343 + ... + 107606.

It is an arithmetic number, because the mean of its divisors is an integer number (16046250).

Almost surely, 2^135215768 is an apocalyptic number.

It is an amenable number.

135215768 is a deficient number, since it is larger than the sum of its proper divisors (121524232).

135215768 is a wasteful number, since it uses less digits than its factorization.

135215768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214034 (or 214030 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The square root of 135215768 is about 11628.2315078433. The cubic root of 135215768 is about 513.2659408164.

The spelling of 135215768 in words is "one hundred thirty-five million, two hundred fifteen thousand, seven hundred sixty-eight".