129927652 has 6 divisors (see below), whose sum is σ = 227373398. Its totient is φ = 64963824.

The previous prime is 129927613. The next prime is 129927653. The reversal of 129927652 is 256729921.

It can be written as a sum of positive squares in only one way, i.e., 126023076 + 3904576 = 11226^2 + 1976^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129927599 and 129927608.

It is not an unprimeable number, because it can be changed into a prime (129927653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16240953 + ... + 16240960.

Almost surely, 2^129927652 is an apocalyptic number.

It is an amenable number.

129927652 is a deficient number, since it is larger than the sum of its proper divisors (97445746).

129927652 is a wasteful number, since it uses less digits than its factorization.

129927652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32481917 (or 32481915 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 129927652 is about 11398.5811397735. The cubic root of 129927652 is about 506.4857100402.

The spelling of 129927652 in words is "one hundred twenty-nine million, nine hundred twenty-seven thousand, six hundred fifty-two".