129307650 has 48 divisors (see below), whose sum is σ = 321967488. Its totient is φ = 34344000.

The previous prime is 129307649. The next prime is 129307697. The reversal of 129307650 is 56703921.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39060 + ... + 42240.

It is an arithmetic number, because the mean of its divisors is an integer number (6707656).

Almost surely, 2^129307650 is an apocalyptic number.

129307650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129307650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160983744).

129307650 is an abundant number, since it is smaller than the sum of its proper divisors (192659838).

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

129307650 is a wasteful number, since it uses less digits than its factorization.

129307650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467 (or 3462 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 129307650 is about 11371.3521623420. The cubic root of 129307650 is about 505.6787918026.

The spelling of 129307650 in words is "one hundred twenty-nine million, three hundred seven thousand, six hundred fifty".