135687378 has 16 divisors (see below), whose sum is σ = 272245536. Its totient is φ = 45084000.

The previous prime is 135687347. The next prime is 135687389. The reversal of 135687378 is 873786531.

It is a super-2 number, since 2×135687378² = 36822129097029768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34248 + ... + 38003.

It is an arithmetic number, because the mean of its divisors is an integer number (17015346).

Almost surely, 2^135687378 is an apocalyptic number.

135687378 is an abundant number, since it is smaller than the sum of its proper divisors (136558158).

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

135687378 is a wasteful number, since it uses less digits than its factorization.

135687378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72569.

The product of its digits is 846720, while the sum is 48.

The square root of 135687378 is about 11648.4925204938. The cubic root of 135687378 is about 513.8619770007.

The spelling of 135687378 in words is "one hundred thirty-five million, six hundred eighty-seven thousand, three hundred seventy-eight".