129647316 has 12 divisors (see below), whose sum is σ = 302510432. Its totient is φ = 43215768.

The previous prime is 129647311. The next prime is 129647327. The reversal of 129647316 is 613746921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129647311) 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, 5401960 + ... + 5401983.

Almost surely, 2^129647316 is an apocalyptic number.

It is an amenable number.

129647316 is an abundant number, since it is smaller than the sum of its proper divisors (172863116).

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

129647316 is a wasteful number, since it uses less digits than its factorization.

129647316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803950 (or 10803948 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 129647316 is about 11386.2775304311. The cubic root of 129647316 is about 506.1211778914.

The spelling of 129647316 in words is "one hundred twenty-nine million, six hundred forty-seven thousand, three hundred sixteen".