129252632 has 64 divisors (see below), whose sum is σ = 266613120. Its totient is φ = 58503168.

The previous prime is 129252631. The next prime is 129252647. The reversal of 129252632 is 236252921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129252631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466478 + ... + 466754.

It is an arithmetic number, because the mean of its divisors is an integer number (4165830).

Almost surely, 2^129252632 is an apocalyptic number.

It is an amenable number.

129252632 is an abundant number, since it is smaller than the sum of its proper divisors (137360488).

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

129252632 is a wasteful number, since it uses less digits than its factorization.

129252632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 416 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 129252632 is about 11368.9327555404. The cubic root of 129252632 is about 505.6070626550.

The spelling of 129252632 in words is "one hundred twenty-nine million, two hundred fifty-two thousand, six hundred thirty-two".