129368730 has 16 divisors (see below), whose sum is σ = 310485024. Its totient is φ = 34498320.

The previous prime is 129368717. The next prime is 129368731. The reversal of 129368730 is 37863921.

It is not an unprimeable number, because it can be changed into a prime (129368731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2156116 + ... + 2156175.

It is an arithmetic number, because the mean of its divisors is an integer number (19405314).

Almost surely, 2^129368730 is an apocalyptic number.

129368730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129368730 is an abundant number, since it is smaller than the sum of its proper divisors (181116294).

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

129368730 is a wasteful number, since it uses less digits than its factorization.

129368730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312301.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 129368730 is about 11374.0375417000. The cubic root of 129368730 is about 505.7584003915.

The spelling of 129368730 in words is "one hundred twenty-nine million, three hundred sixty-eight thousand, seven hundred thirty".