129046752 has 72 divisors (see below), whose sum is σ = 379655640. Its totient is φ = 41529600.

The previous prime is 129046733. The next prime is 129046777. The reversal of 129046752 is 257640921.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

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, 627 + ... + 16077.

It is an arithmetic number, because the mean of its divisors is an integer number (5272995).

Almost surely, 2^129046752 is an apocalyptic number.

129046752 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 129046752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189827820).

129046752 is an abundant number, since it is smaller than the sum of its proper divisors (250608888).

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

129046752 is a wasteful number, since it uses less digits than its factorization.

129046752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496 (or 15485 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 129046752 is about 11359.8746471957. The cubic root of 129046752 is about 505.3384679959.

The spelling of 129046752 in words is "one hundred twenty-nine million, forty-six thousand, seven hundred fifty-two".