129530744 has 32 divisors (see below), whose sum is σ = 277939200. Its totient is φ = 55438560.

The previous prime is 129530743. The next prime is 129530759. The reversal of 129530744 is 447035921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129530743) 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 7 ways as a sum of consecutive naturals, for example, 67997 + ... + 69875.

It is an arithmetic number, because the mean of its divisors is an integer number (8685600).

Almost surely, 2^129530744 is an apocalyptic number.

129530744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129530744 is an abundant number, since it is smaller than the sum of its proper divisors (148408456).

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

129530744 is a wasteful number, since it uses less digits than its factorization.

129530744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123 (or 3119 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 129530744 is about 11381.1574103867. The cubic root of 129530744 is about 505.9694399516.

The spelling of 129530744 in words is "one hundred twenty-nine million, five hundred thirty thousand, seven hundred forty-four".