129982068 has 72 divisors (see below), whose sum is σ = 350296128. Its totient is φ = 40497408.

The previous prime is 129982063. The next prime is 129982081. The reversal of 129982068 is 860289921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129982063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99105 + ... + 100407.

It is an arithmetic number, because the mean of its divisors is an integer number (4865224).

Almost surely, 2^129982068 is an apocalyptic number.

129982068 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 129982068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175148064).

129982068 is an abundant number, since it is smaller than the sum of its proper divisors (220314060).

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

129982068 is a wasteful number, since it uses less digits than its factorization.

129982068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1488 counting only the distinct ones).

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

The square root of 129982068 is about 11400.9678536517. The cubic root of 129982068 is about 506.5564085641.

The spelling of 129982068 in words is "one hundred twenty-nine million, nine hundred eighty-two thousand, sixty-eight".