129788322 has 8 divisors (see below), whose sum is σ = 259576656. Its totient is φ = 43262772.

The previous prime is 129788279. The next prime is 129788327. The reversal of 129788322 is 223887921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

129788322 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (129788327) 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, 10815688 + ... + 10815699.

It is an arithmetic number, because the mean of its divisors is an integer number (32447082).

Almost surely, 2^129788322 is an apocalyptic number.

129788322 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129788322 is a wasteful number, since it uses less digits than its factorization.

129788322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21631392.

The product of its digits is 96768, while the sum is 42.

The square root of 129788322 is about 11392.4677748063. The cubic root of 129788322 is about 506.3045992629.

The spelling of 129788322 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, three hundred twenty-two".