134720778 has 16 divisors (see below), whose sum is σ = 272220480. Its totient is φ = 44443776.

The previous prime is 134720771. The next prime is 134720779. The reversal of 134720778 is 877027431.

It is not an unprimeable number, because it can be changed into a prime (134720771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115158 + ... + 116321.

It is an arithmetic number, because the mean of its divisors is an integer number (17013780).

Almost surely, 2^134720778 is an apocalyptic number.

134720778 is an abundant number, since it is smaller than the sum of its proper divisors (137499702).

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

134720778 is a wasteful number, since it uses less digits than its factorization.

134720778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231581.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 134720778 is about 11606.9280173524. The cubic root of 134720778 is about 512.6388636599.

The spelling of 134720778 in words is "one hundred thirty-four million, seven hundred twenty thousand, seven hundred seventy-eight".