129472560 has 160 divisors (see below), whose sum is σ = 509729280. Its totient is φ = 29590272.

The previous prime is 129472477. The next prime is 129472571. The reversal of 129472560 is 65274921.

129472560 is a `hidden beast` number, since 1 + 2 + 94 + 7 + 2 + 560 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10839 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (3185808).

Almost surely, 2^129472560 is an apocalyptic number.

129472560 is a gapful number since it is divisible by the number (10) 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 129472560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254864640).

129472560 is an abundant number, since it is smaller than the sum of its proper divisors (380256720).

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

129472560 is a wasteful number, since it uses less digits than its factorization.

129472560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8592 (or 8580 counting only the distinct ones).

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

The square root of 129472560 is about 11378.6009684847. The cubic root of 129472560 is about 505.8936696903.

The spelling of 129472560 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, five hundred sixty".