129629650 has 12 divisors (see below), whose sum is σ = 241111242. Its totient is φ = 51851840.

The previous prime is 129629603. The next prime is 129629651. The reversal of 129629650 is 56926921.

It can be written as a sum of positive squares in 3 ways, for example, as 68211081 + 61418569 = 8259^2 + 7837^2 .

It is not an unprimeable number, because it can be changed into a prime (129629651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1296247 + ... + 1296346.

Almost surely, 2^129629650 is an apocalyptic number.

129629650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129629650 is a deficient number, since it is larger than the sum of its proper divisors (111481592).

129629650 is a wasteful number, since it uses less digits than its factorization.

129629650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592605 (or 2592600 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 129629650 is about 11385.5017456413. The cubic root of 129629650 is about 506.0981884892.

The spelling of 129629650 in words is "one hundred twenty-nine million, six hundred twenty-nine thousand, six hundred fifty".