134778 has 16 divisors (see below), whose sum is σ = 308160. Its totient is φ = 38496.

The previous prime is 134777. The next prime is 134789. The reversal of 134778 is 877431.

It is a happy number.

134778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 1 + 3⁶ + 7 + 4⁷ + 7⁶ + 8 .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (134777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (19260).

2¹³⁴⁷⁷⁸ is an apocalyptic number.

134778 is an abundant number, since it is smaller than the sum of its proper divisors (173382).

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

134778 is a wasteful number, since it uses less digits than its factorization.

134778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its digits is 4704, while the sum is 30.

The square root of 134778 is about 367.1212333821. The cubic root of 134778 is about 51.2711433680.

The spelling of 134778 in words is "one hundred thirty-four thousand, seven hundred seventy-eight".