129833100 has 54 divisors (see below), whose sum is σ = 406957460. Its totient is φ = 34621920.

The previous prime is 129833083. The next prime is 129833107. The reversal of 129833100 is 1338921.

It is a super-2 number, since 2×129833100² = 33713267711220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129833107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 71230 + ... + 73029.

Almost surely, 2^129833100 is an apocalyptic number.

129833100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129833100 is an abundant number, since it is smaller than the sum of its proper divisors (277124360).

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

129833100 is a wasteful number, since it uses less digits than its factorization.

129833100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144279 (or 144269 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 129833100 is about 11394.4328511778. The cubic root of 129833100 is about 506.3628189348.

The spelling of 129833100 in words is "one hundred twenty-nine million, eight hundred thirty-three thousand, one hundred".