135780878 has 8 divisors (see below), whose sum is σ = 214390920. Its totient is φ = 64317240.

The previous prime is 135780877. The next prime is 135780901. The reversal of 135780878 is 878087531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135780877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786553 + ... + 1786628.

It is an arithmetic number, because the mean of its divisors is an integer number (26798865).

Almost surely, 2^135780878 is an apocalyptic number.

135780878 is a deficient number, since it is larger than the sum of its proper divisors (78610042).

135780878 is a wasteful number, since it uses less digits than its factorization.

135780878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573202.

The product of its (nonzero) digits is 376320, while the sum is 47.

The square root of 135780878 is about 11652.5052241996. The cubic root of 135780878 is about 513.9799812539.

The spelling of 135780878 in words is "one hundred thirty-five million, seven hundred eighty thousand, eight hundred seventy-eight".