134477778 has 16 divisors (see below), whose sum is σ = 269163360. Its totient is φ = 44791296.

The previous prime is 134477773. The next prime is 134477779. The reversal of 134477778 is 877774431.

It is a happy number.

134477778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (134477773) 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, 501 + ... + 16407.

It is an arithmetic number, because the mean of its divisors is an integer number (16822710).

Almost surely, 2^134477778 is an apocalyptic number.

134477778 is an abundant number, since it is smaller than the sum of its proper divisors (134685582).

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

134477778 is a wasteful number, since it uses less digits than its factorization.

134477778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321.

The product of its digits is 921984, while the sum is 48.

The square root of 134477778 is about 11596.4554067180. The cubic root of 134477778 is about 512.3304573435.

The spelling of 134477778 in words is "one hundred thirty-four million, four hundred seventy-seven thousand, seven hundred seventy-eight".