129676680 has 256 divisors, whose sum is σ = 523584000. Its totient is φ = 27869184.

The previous prime is 129676639. The next prime is 129676693. The reversal of 129676680 is 86676921.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128016 + ... + 129024.

It is an arithmetic number, because the mean of its divisors is an integer number (2045250).

Almost surely, 2^129676680 is an apocalyptic number.

129676680 is a gapful number since it is divisible by the number (10) 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 129676680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261792000).

129676680 is an abundant number, since it is smaller than the sum of its proper divisors (393907320).

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

129676680 is a wasteful number, since it uses less digits than its factorization.

129676680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 129676680 is about 11387.5669043040. The cubic root of 129676680 is about 506.1593857022.

The spelling of 129676680 in words is "one hundred twenty-nine million, six hundred seventy-six thousand, six hundred eighty".