134705778 has 16 divisors (see below), whose sum is σ = 273433440. Its totient is φ = 44231616.

The previous prime is 134705771. The next prime is 134705827. The reversal of 134705778 is 877507431.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (134705771) 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, 167143 + ... + 167946.

It is an arithmetic number, because the mean of its divisors is an integer number (17089590).

Almost surely, 2^134705778 is an apocalyptic number.

134705778 is an abundant number, since it is smaller than the sum of its proper divisors (138727662).

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

134705778 is a wasteful number, since it uses less digits than its factorization.

134705778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335161.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 134705778 is about 11606.2818335589. The cubic root of 134705778 is about 512.6198369775.

The spelling of 134705778 in words is "one hundred thirty-four million, seven hundred five thousand, seven hundred seventy-eight".