129608 has 16 divisors (see below), whose sum is σ = 257580. Its totient is φ = 60928.

The previous prime is 129607. The next prime is 129629. The reversal of 129608 is 806921.

It can be written as a sum of positive squares in 2 ways, for example, as 128164 + 1444 = 358^2 + 38^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 129608.

It is not an unprimeable number, because it can be changed into a prime (129607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341 + ... + 612.

129608 is a Friedman number, since it can be written as 90^2*16+8, using all its digits and the basic arithmetic operations.

2¹²⁹⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

129608 is a deficient number, since it is larger than the sum of its proper divisors (127972).

129608 is a wasteful number, since it uses less digits than its factorization.

129608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976 (or 972 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 129608 is about 360.0111109396. The cubic root of 129608 is about 50.6070011716.

It can be divided in two parts, 129 and 608, that added together give a palindrome (737).

The spelling of 129608 in words is "one hundred twenty-nine thousand, six hundred eight".