129890760 has 64 divisors (see below), whose sum is σ = 393724800. Its totient is φ = 34277376.

The previous prime is 129890759. The next prime is 129890791. The reversal of 129890760 is 67098921.

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, 6061 + ... + 17219.

It is an arithmetic number, because the mean of its divisors is an integer number (6151950).

Almost surely, 2^129890760 is an apocalyptic number.

129890760 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 129890760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196862400).

129890760 is an abundant number, since it is smaller than the sum of its proper divisors (263834040).

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

129890760 is a wasteful number, since it uses less digits than its factorization.

129890760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270 (or 11266 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 129890760 is about 11396.9627532953. The cubic root of 129890760 is about 506.4377678731.

The spelling of 129890760 in words is "one hundred twenty-nine million, eight hundred ninety thousand, seven hundred sixty".