129715516 has 12 divisors (see below), whose sum is σ = 259431088. Its totient is φ = 55592352.

The previous prime is 129715511. The next prime is 129715517. The reversal of 129715516 is 615517921.

129715516 is an admirable number.

It is a super-2 number, since 2×129715516² = 33652230182292512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129715511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316321 + ... + 2316376.

Almost surely, 2^129715516 is an apocalyptic number.

It is an amenable number.

129715516 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.

129715516 is a wasteful number, since it uses less digits than its factorization.

129715516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4632708 (or 4632706 counting only the distinct ones).

The product of its digits is 18900, while the sum is 37.

The square root of 129715516 is about 11389.2719697090. The cubic root of 129715516 is about 506.2099094199.

The spelling of 129715516 in words is "one hundred twenty-nine million, seven hundred fifteen thousand, five hundred sixteen".