134672778 has 24 divisors (see below), whose sum is σ = 292101888. Its totient is φ = 44843112.

The previous prime is 134672777. The next prime is 134672789. The reversal of 134672778 is 877276431.

It is not an unprimeable number, because it can be changed into a prime (134672771) 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 11 ways as a sum of consecutive naturals, for example, 16125 + ... + 23007.

It is an arithmetic number, because the mean of its divisors is an integer number (12170912).

Almost surely, 2^134672778 is an apocalyptic number.

134672778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

134672778 is an abundant number, since it is smaller than the sum of its proper divisors (157429110).

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

134672778 is a wasteful number, since it uses less digits than its factorization.

134672778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978 (or 7975 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 134672778 is about 11604.8601025605. The cubic root of 134672778 is about 512.5779733039.

The spelling of 134672778 in words is "one hundred thirty-four million, six hundred seventy-two thousand, seven hundred seventy-eight".