129471696 has 50 divisors (see below), whose sum is σ = 374732402. Its totient is φ = 43156800.

The previous prime is 129471679. The next prime is 129471701. The reversal of 129471696 is 696174921.

It can be written as a sum of positive squares in only one way, i.e., 128595600 + 876096 = 11340^2 + 936^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48655 + ... + 51246.

Almost surely, 2^129471696 is an apocalyptic number.

129471696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129471696 is an abundant number, since it is smaller than the sum of its proper divisors (245260706).

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

129471696 is an equidigital number, since it uses as much as digits as its factorization.

129471696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99921 (or 99906 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 129471696 is about 11378.5630024182. The cubic root of 129471696 is about 505.8925443731.

The spelling of 129471696 in words is "one hundred twenty-nine million, four hundred seventy-one thousand, six hundred ninety-six".