129234216 has 32 divisors (see below), whose sum is σ = 323778240. Its totient is φ = 42985728.

The previous prime is 129234211. The next prime is 129234239. The reversal of 129234216 is 612432921.

It is not an unprimeable number, because it can be changed into a prime (129234211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6160 + ... + 17216.

It is an arithmetic number, because the mean of its divisors is an integer number (10118070).

Almost surely, 2^129234216 is an apocalyptic number.

It is an amenable number.

129234216 is an abundant number, since it is smaller than the sum of its proper divisors (194544024).

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

129234216 is a wasteful number, since it uses less digits than its factorization.

129234216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11553 (or 11549 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 129234216 is about 11368.1228001812. The cubic root of 129234216 is about 505.5830484389.

The spelling of 129234216 in words is "one hundred twenty-nine million, two hundred thirty-four thousand, two hundred sixteen".