135684390 has 32 divisors (see below), whose sum is σ = 326073600. Its totient is φ = 36134624.

The previous prime is 135684331. The next prime is 135684401. The reversal of 135684390 is 93486531.

135684390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24061 + ... + 29159.

It is an arithmetic number, because the mean of its divisors is an integer number (10189800).

Almost surely, 2^135684390 is an apocalyptic number.

135684390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135684390 is an abundant number, since it is smaller than the sum of its proper divisors (190389210).

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

135684390 is a wasteful number, since it uses less digits than its factorization.

135684390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 135684390 is about 11648.3642628482. The cubic root of 135684390 is about 513.8582050191.

The spelling of 135684390 in words is "one hundred thirty-five million, six hundred eighty-four thousand, three hundred ninety".