129622432 has 12 divisors (see below), whose sum is σ = 255194226. Its totient is φ = 64811200.

The previous prime is 129622417. The next prime is 129622453. The reversal of 129622432 is 234226921.

It can be written as a sum of positive squares in only one way, i.e., 83978896 + 45643536 = 9164^2 + 6756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129622394 and 129622403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025319 + ... + 2025382.

Almost surely, 2^129622432 is an apocalyptic number.

It is an amenable number.

129622432 is a deficient number, since it is larger than the sum of its proper divisors (125571794).

129622432 is an equidigital number, since it uses as much as digits as its factorization.

129622432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050711 (or 4050703 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 129622432 is about 11385.1847591508. The cubic root of 129622432 is about 506.0887948447.

The spelling of 129622432 in words is "one hundred twenty-nine million, six hundred twenty-two thousand, four hundred thirty-two".