129730633 has 4 divisors (see below), whose sum is σ = 129853060. Its totient is φ = 129608208.

The previous prime is 129730609. The next prime is 129730721. The reversal of 129730633 is 336037921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76265289 + 53465344 = 8733^2 + 7312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129730633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129730033) 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, 59610 + ... + 61747.

It is an arithmetic number, because the mean of its divisors is an integer number (32463265).

Almost surely, 2^129730633 is an apocalyptic number.

It is an amenable number.

129730633 is a deficient number, since it is larger than the sum of its proper divisors (122427).

129730633 is a wasteful number, since it uses less digits than its factorization.

129730633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122426.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 129730633 is about 11389.9356012227. The cubic root of 129730633 is about 506.2295731635.

The spelling of 129730633 in words is "one hundred twenty-nine million, seven hundred thirty thousand, six hundred thirty-three".