129292008 has 16 divisors (see below), whose sum is σ = 323230080. Its totient is φ = 43097328.

The previous prime is 129292003. The next prime is 129292027. The reversal of 129292008 is 800292921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 129292008.

It is not an unprimeable number, because it can be changed into a prime (129292003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693560 + ... + 2693607.

It is an arithmetic number, because the mean of its divisors is an integer number (20201880).

Almost surely, 2^129292008 is an apocalyptic number.

It is an amenable number.

129292008 is an abundant number, since it is smaller than the sum of its proper divisors (193938072).

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

129292008 is a wasteful number, since it uses less digits than its factorization.

129292008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387176 (or 5387172 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 129292008 is about 11370.6643605376. The cubic root of 129292008 is about 505.6584007775.

The spelling of 129292008 in words is "one hundred twenty-nine million, two hundred ninety-two thousand, eight".