129648330 has 64 divisors (see below), whose sum is σ = 395124480. Its totient is φ = 29633472.

The previous prime is 129648319. The next prime is 129648353. The reversal of 129648330 is 33846921.

129648330 is a `hidden beast` number, since 1 + 2 + 9 + 648 + 3 + 3 + 0 = 666.

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, 32409 + ... + 36188.

It is an arithmetic number, because the mean of its divisors is an integer number (6173820).

Almost surely, 2^129648330 is an apocalyptic number.

129648330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129648330 is an abundant number, since it is smaller than the sum of its proper divisors (265476150).

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

129648330 is a wasteful number, since it uses less digits than its factorization.

129648330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68620 (or 68614 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 129648330 is about 11386.3220576269. The cubic root of 129648330 is about 506.1224973827.

The spelling of 129648330 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, three hundred thirty".