129960288 has 108 divisors (see below), whose sum is σ = 384389460. Its totient is φ = 43250112.

The previous prime is 129960269. The next prime is 129960307. The reversal of 129960288 is 882069921.

It is an interprime number because it is at equal distance from previous prime (129960269) and next prime (129960307).

It is a tau number, because it is divible by the number of its divisors (108).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 209643 + ... + 210261.

Almost surely, 2^129960288 is an apocalyptic number.

129960288 is a gapful number since it is divisible by the number (18) 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 129960288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192194730).

129960288 is an abundant number, since it is smaller than the sum of its proper divisors (254429172).

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

129960288 is an frugal number, since it uses more digits than its factorization.

129960288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 129960288 is about 11400.0126315719. The cubic root of 129960288 is about 506.5281138539.

The spelling of 129960288 in words is "one hundred twenty-nine million, nine hundred sixty thousand, two hundred eighty-eight".