129350850 has 48 divisors (see below), whose sum is σ = 334746432. Its totient is φ = 32992960.

The previous prime is 129350839. The next prime is 129350857. The reversal of 129350850 is 58053921.

It is a super-5 number, since 5×129350850⁵ (a number of 42 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (129350857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15297 + ... + 22196.

It is an arithmetic number, because the mean of its divisors is an integer number (6973884).

Almost surely, 2^129350850 is an apocalyptic number.

129350850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129350850 is an abundant number, since it is smaller than the sum of its proper divisors (205395582).

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

129350850 is a wasteful number, since it uses less digits than its factorization.

129350850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37531 (or 37526 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 129350850 is about 11373.2515139691. The cubic root of 129350850 is about 505.7350990964.

The spelling of 129350850 in words is "one hundred twenty-nine million, three hundred fifty thousand, eight hundred fifty".