129900672 has 320 divisors, whose sum is σ = 453198240. Its totient is φ = 36495360.

The previous prime is 129900649. The next prime is 129900707. The reversal of 129900672 is 276009921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1938783 + ... + 1938849.

Almost surely, 2^129900672 is an apocalyptic number.

129900672 is a gapful number since it is divisible by the number (12) 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 129900672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226599120).

129900672 is an abundant number, since it is smaller than the sum of its proper divisors (323297568).

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

129900672 is a wasteful number, since it uses less digits than its factorization.

129900672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 129900672 is about 11397.3975976975. The cubic root of 129900672 is about 506.4506496811.

The spelling of 129900672 in words is "one hundred twenty-nine million, nine hundred thousand, six hundred seventy-two".