129292672 has 64 divisors (see below), whose sum is σ = 271299600. Its totient is φ = 61286400.

The previous prime is 129292649. The next prime is 129292687. The reversal of 129292672 is 276292921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 226147 + ... + 226717.

Almost surely, 2^129292672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129292672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135649800).

129292672 is an abundant number, since it is smaller than the sum of its proper divisors (142006928).

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

129292672 is an equidigital number, since it uses as much as digits as its factorization.

129292672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 663 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 129292672 is about 11370.6935584422. The cubic root of 129292672 is about 505.6592664062.

The spelling of 129292672 in words is "one hundred twenty-nine million, two hundred ninety-two thousand, six hundred seventy-two".