135220178 has 8 divisors (see below), whose sum is σ = 202895280. Its totient is φ = 67588420.

The previous prime is 135220177. The next prime is 135220187. The reversal of 135220178 is 871022531.

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

It is a self number, because there is not a number n which added to its sum of digits gives 135220178.

It is not an unprimeable number, because it can be changed into a prime (135220177) 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, 1388 + ... + 16503.

It is an arithmetic number, because the mean of its divisors is an integer number (25361910).

Almost surely, 2^135220178 is an apocalyptic number.

135220178 is a deficient number, since it is larger than the sum of its proper divisors (67675102).

135220178 is a wasteful number, since it uses less digits than its factorization.

135220178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21672.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 135220178 is about 11628.4211310048. The cubic root of 135220178 is about 513.2715207332.

The spelling of 135220178 in words is "one hundred thirty-five million, two hundred twenty thousand, one hundred seventy-eight".