134428056 has 64 divisors (see below), whose sum is σ = 386515200. Its totient is φ = 38164608.

The previous prime is 134428039. The next prime is 134428069. The reversal of 134428056 is 650824431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24930 + ... + 29838.

It is an arithmetic number, because the mean of its divisors is an integer number (6039300).

Almost surely, 2^134428056 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 134428056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193257600).

134428056 is an abundant number, since it is smaller than the sum of its proper divisors (252087144).

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

134428056 is a wasteful number, since it uses less digits than its factorization.

134428056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088 (or 5084 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 134428056 is about 11594.3113637680. The cubic root of 134428056 is about 512.2673063019.

The spelling of 134428056 in words is "one hundred thirty-four million, four hundred twenty-eight thousand, fifty-six".