129014268 has 96 divisors (see below), whose sum is σ = 326645760. Its totient is φ = 39536640.

The previous prime is 129014267. The next prime is 129014273. The reversal of 129014268 is 862410921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129014261) 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, 1329996 + ... + 1330092.

It is an arithmetic number, because the mean of its divisors is an integer number (3402560).

Almost surely, 2^129014268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129014268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163322880).

129014268 is an abundant number, since it is smaller than the sum of its proper divisors (197631492).

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

129014268 is a wasteful number, since it uses less digits than its factorization.

129014268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 129014268 is about 11358.4447879100. Note that the first 3 decimals coincide. The cubic root of 129014268 is about 505.2960627122.

The spelling of 129014268 in words is "one hundred twenty-nine million, fourteen thousand, two hundred sixty-eight".