129770600 has 48 divisors (see below), whose sum is σ = 314845920. Its totient is φ = 49649600.

The previous prime is 129770593. The next prime is 129770609. The reversal of 129770600 is 6077921.

It is not an unprimeable number, because it can be changed into a prime (129770609) 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, 9506 + ... + 18705.

It is an arithmetic number, because the mean of its divisors is an integer number (6559290).

Almost surely, 2^129770600 is an apocalyptic number.

129770600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129770600 is an abundant number, since it is smaller than the sum of its proper divisors (185075320).

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

129770600 is a wasteful number, since it uses less digits than its factorization.

129770600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28250 (or 28241 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 129770600 is about 11391.6899536460. The cubic root of 129770600 is about 506.2815536904.

The spelling of 129770600 in words is "one hundred twenty-nine million, seven hundred seventy thousand, six hundred".