129807696 has 80 divisors (see below), whose sum is σ = 354888000. Its totient is φ = 40771584.

The previous prime is 129807659. The next prime is 129807709. The reversal of 129807696 is 696708921.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 288880 + ... + 289328.

It is an arithmetic number, because the mean of its divisors is an integer number (4436100).

Almost surely, 2^129807696 is an apocalyptic number.

129807696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129807696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177444000).

129807696 is an abundant number, since it is smaller than the sum of its proper divisors (225080304).

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

129807696 is a wasteful number, since it uses less digits than its factorization.

129807696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 790 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 129807696 is about 11393.3180417295. The cubic root of 129807696 is about 506.3297906851.

The spelling of 129807696 in words is "one hundred twenty-nine million, eight hundred seven thousand, six hundred ninety-six".