134729728 has 104 divisors (see below), whose sum is σ = 318728192. Its totient is φ = 55738368.

The previous prime is 134729717. The next prime is 134729729. The reversal of 134729728 is 827927431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134729729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060801 + ... + 1060927.

Almost surely, 2^134729728 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 134729728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159364096).

134729728 is an abundant number, since it is smaller than the sum of its proper divisors (183998464).

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

134729728 is an equidigital number, since it uses as much as digits as its factorization.

134729728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 173 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 134729728 is about 11607.3135565470. The cubic root of 134729728 is about 512.6502155744.

The spelling of 134729728 in words is "one hundred thirty-four million, seven hundred twenty-nine thousand, seven hundred twenty-eight".