129815284 has 12 divisors (see below), whose sum is σ = 227360224. Its totient is φ = 64855224.

The previous prime is 129815263. The next prime is 129815299. The reversal of 129815284 is 482518921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7242 + ... + 17665.

Almost surely, 2^129815284 is an apocalyptic number.

It is an amenable number.

129815284 is a deficient number, since it is larger than the sum of its proper divisors (97544940).

129815284 is a wasteful number, since it uses less digits than its factorization.

129815284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26214 (or 26212 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 129815284 is about 11393.6510390656. The cubic root of 129815284 is about 506.3396564474.

The spelling of 129815284 in words is "one hundred twenty-nine million, eight hundred fifteen thousand, two hundred eighty-four".