129323650 has 24 divisors (see below), whose sum is σ = 240855120. Its totient is φ = 51662160.

The previous prime is 129323627. The next prime is 129323653. The reversal of 129323650 is 56323921.

It is not an unprimeable number, because it can be changed into a prime (129323653) 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 11 ways as a sum of consecutive naturals, for example, 58261 + ... + 60439.

It is an arithmetic number, because the mean of its divisors is an integer number (10035630).

Almost surely, 2^129323650 is an apocalyptic number.

129323650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129323650 is a deficient number, since it is larger than the sum of its proper divisors (111531470).

129323650 is a wasteful number, since it uses less digits than its factorization.

129323650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378 (or 3373 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 129323650 is about 11372.0556628958. The cubic root of 129323650 is about 505.6996478179.

The spelling of 129323650 in words is "one hundred twenty-nine million, three hundred twenty-three thousand, six hundred fifty".