135709878 has 64 divisors (see below), whose sum is σ = 299593728. Its totient is φ = 40796160.

The previous prime is 135709859. The next prime is 135709901. The reversal of 135709878 is 878907531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527926 + ... + 528182.

It is an arithmetic number, because the mean of its divisors is an integer number (4681152).

Almost surely, 2^135709878 is an apocalyptic number.

135709878 is an abundant number, since it is smaller than the sum of its proper divisors (163883850).

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

135709878 is a wasteful number, since it uses less digits than its factorization.

135709878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 135709878 is about 11649.4582706665. The cubic root of 135709878 is about 513.8903786978.

The spelling of 135709878 in words is "one hundred thirty-five million, seven hundred nine thousand, eight hundred seventy-eight".