129648144 has 40 divisors (see below), whose sum is σ = 335335680. Its totient is φ = 43163008.

The previous prime is 129648133. The next prime is 129648161. The reversal of 129648144 is 441846921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68134 + ... + 70010.

It is an arithmetic number, because the mean of its divisors is an integer number (8383392).

Almost surely, 2^129648144 is an apocalyptic number.

It is an amenable number.

129648144 is an abundant number, since it is smaller than the sum of its proper divisors (205687536).

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

129648144 is a wasteful number, since it uses less digits than its factorization.

129648144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3321 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 129648144 is about 11386.3138899294. The cubic root of 129648144 is about 506.1222553464.

The spelling of 129648144 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, one hundred forty-four".