129530572 has 24 divisors (see below), whose sum is σ = 240422112. Its totient is φ = 60931200.

The previous prime is 129530539. The next prime is 129530627. The reversal of 129530572 is 275035921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5929 + ... + 17152.

It is an arithmetic number, because the mean of its divisors is an integer number (10017588).

Almost surely, 2^129530572 is an apocalyptic number.

It is an amenable number.

129530572 is a deficient number, since it is larger than the sum of its proper divisors (110891540).

129530572 is a wasteful number, since it uses less digits than its factorization.

129530572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23169 (or 23167 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 129530572 is about 11381.1498540350. The cubic root of 129530572 is about 505.9692159976.

The spelling of 129530572 in words is "one hundred twenty-nine million, five hundred thirty thousand, five hundred seventy-two".