129690288 has 160 divisors (see below), whose sum is σ = 458304000. Its totient is φ = 34193664.

The previous prime is 129690283. The next prime is 129690293. The reversal of 129690288 is 882096921.

It is an interprime number because it is at equal distance from previous prime (129690283) and next prime (129690293).

It is not an unprimeable number, because it can be changed into a prime (129690283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37663 + ... + 40961.

It is an arithmetic number, because the mean of its divisors is an integer number (2864400).

Almost surely, 2^129690288 is an apocalyptic number.

129690288 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 129690288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229152000).

129690288 is an abundant number, since it is smaller than the sum of its proper divisors (328613712).

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

129690288 is a wasteful number, since it uses less digits than its factorization.

129690288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3324 counting only the distinct ones).

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

The square root of 129690288 is about 11388.1643823752. The cubic root of 129690288 is about 506.1770901859.

The spelling of 129690288 in words is "one hundred twenty-nine million, six hundred ninety thousand, two hundred eighty-eight".