129288488 has 16 divisors (see below), whose sum is σ = 277046880. Its totient is φ = 55409328.

The previous prime is 129288479. The next prime is 129288491. The reversal of 129288488 is 884882921.

It is a happy number.

It is a super-2 number, since 2×129288488² = 33431026258652288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154306 + ... + 1154417.

It is an arithmetic number, because the mean of its divisors is an integer number (17315430).

Almost surely, 2^129288488 is an apocalyptic number.

It is an amenable number.

129288488 is an abundant number, since it is smaller than the sum of its proper divisors (147758392).

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

129288488 is a wasteful number, since it uses less digits than its factorization.

129288488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308736 (or 2308732 counting only the distinct ones).

The product of its digits is 589824, while the sum is 50.

The square root of 129288488 is about 11370.5095752125. The cubic root of 129288488 is about 505.6538118532.

The spelling of 129288488 in words is "one hundred twenty-nine million, two hundred eighty-eight thousand, four hundred eighty-eight".