129963800 has 96 divisors (see below), whose sum is σ = 332121600. Its totient is φ = 47076480.

The previous prime is 129963797. The next prime is 129963839. The reversal of 129963800 is 8369921.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86657 + ... + 88143.

It is an arithmetic number, because the mean of its divisors is an integer number (3459600).

Almost surely, 2^129963800 is an apocalyptic number.

129963800 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 129963800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166060800).

129963800 is an abundant number, since it is smaller than the sum of its proper divisors (202157800).

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

129963800 is a wasteful number, since it uses less digits than its factorization.

129963800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 129963800 is about 11400.1666654484. The cubic root of 129963800 is about 506.5326765572.

The spelling of 129963800 in words is "one hundred twenty-nine million, nine hundred sixty-three thousand, eight hundred".