129730624 has 28 divisors (see below), whose sum is σ = 258944364. Its totient is φ = 64484864.

The previous prime is 129730609. The next prime is 129730721. The reversal of 129730624 is 426037921.

It can be written as a sum of positive squares in 2 ways, for example, as 49449024 + 80281600 = 7032^2 + 8960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129730624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5214 + ... + 16930.

It is an arithmetic number, because the mean of its divisors is an integer number (9248013).

Almost surely, 2^129730624 is an apocalyptic number.

It is an amenable number.

129730624 is a deficient number, since it is larger than the sum of its proper divisors (129213740).

129730624 is a wasteful number, since it uses less digits than its factorization.

129730624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902 (or 11892 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 129730624 is about 11389.9352061370. The cubic root of 129730624 is about 506.2295614570.

The spelling of 129730624 in words is "one hundred twenty-nine million, seven hundred thirty thousand, six hundred twenty-four".