129528366 has 16 divisors (see below), whose sum is σ = 282607488. Its totient is φ = 39251000.

The previous prime is 129528331. The next prime is 129528391. The reversal of 129528366 is 663825921.

It is a congruent number.

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, 981210 + ... + 981341.

It is an arithmetic number, because the mean of its divisors is an integer number (17662968).

Almost surely, 2^129528366 is an apocalyptic number.

129528366 is an abundant number, since it is smaller than the sum of its proper divisors (153079122).

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

129528366 is a wasteful number, since it uses less digits than its factorization.

129528366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962567.

The product of its digits is 155520, while the sum is 42.

The square root of 129528366 is about 11381.0529389859. The cubic root of 129528366 is about 505.9663436399.

The spelling of 129528366 in words is "one hundred twenty-nine million, five hundred twenty-eight thousand, three hundred sixty-six".