134779128 has 128 divisors (see below), whose sum is σ = 396576000. Its totient is φ = 37713920.

The previous prime is 134779081. The next prime is 134779133. The reversal of 134779128 is 821977431.

It is a self number, because there is not a number n which added to its sum of digits gives 134779128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264538 + ... + 265046.

It is an arithmetic number, because the mean of its divisors is an integer number (3098250).

Almost surely, 2^134779128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134779128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198288000).

134779128 is an abundant number, since it is smaller than the sum of its proper divisors (261796872).

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

134779128 is a wasteful number, since it uses less digits than its factorization.

134779128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 601 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 134779128 is about 11609.4413302277. The cubic root of 134779128 is about 512.7128640248.

The spelling of 134779128 in words is "one hundred thirty-four million, seven hundred seventy-nine thousand, one hundred twenty-eight".