129028714 has 8 divisors (see below), whose sum is σ = 200217060. Its totient is φ = 62289696.

The previous prime is 129028673. The next prime is 129028717. The reversal of 129028714 is 417820921.

It can be written as a sum of positive squares in 2 ways, for example, as 123943689 + 5085025 = 11133^2 + 2255^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 129028714.

It is not an unprimeable number, because it can be changed into a prime (129028717) 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, 1112259 + ... + 1112374.

Almost surely, 2^129028714 is an apocalyptic number.

129028714 is a deficient number, since it is larger than the sum of its proper divisors (71188346).

129028714 is a wasteful number, since it uses less digits than its factorization.

129028714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224664.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 129028714 is about 11359.0806846329. The cubic root of 129028714 is about 505.3149216974.

The spelling of 129028714 in words is "one hundred twenty-nine million, twenty-eight thousand, seven hundred fourteen".