129033700 has 36 divisors (see below), whose sum is σ = 282047920. Its totient is φ = 51236640.

The previous prime is 129033647. The next prime is 129033733. The reversal of 129033700 is 7330921.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9259 + ... + 18541.

Almost surely, 2^129033700 is an apocalyptic number.

129033700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129033700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141023960).

129033700 is an abundant number, since it is smaller than the sum of its proper divisors (153014220).

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

129033700 is a wasteful number, since it uses less digits than its factorization.

129033700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 129033700 is about 11359.3001544990. The cubic root of 129033700 is about 505.3214305012.

The spelling of 129033700 in words is "one hundred twenty-nine million, thirty-three thousand, seven hundred".