129328552 has 16 divisors (see below), whose sum is σ = 245813940. Its totient is φ = 63778176.

The previous prime is 129328543. The next prime is 129328561. The reversal of 129328552 is 255823921.

It is an interprime number because it is at equal distance from previous prime (129328543) and next prime (129328561).

It can be written as a sum of positive squares in 2 ways, for example, as 117809316 + 11519236 = 10854^2 + 3394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110143 + ... + 111310.

Almost surely, 2^129328552 is an apocalyptic number.

It is an amenable number.

129328552 is a deficient number, since it is larger than the sum of its proper divisors (116485388).

129328552 is a wasteful number, since it uses less digits than its factorization.

129328552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221532 (or 221528 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 129328552 is about 11372.2711891689. The cubic root of 129328552 is about 505.7060372354.

The spelling of 129328552 in words is "one hundred twenty-nine million, three hundred twenty-eight thousand, five hundred fifty-two".