129230818 has 32 divisors (see below), whose sum is σ = 209183040. Its totient is φ = 59693760.

The previous prime is 129230797. The next prime is 129230833. The reversal of 129230818 is 818032921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456505 + ... + 456787.

It is an arithmetic number, because the mean of its divisors is an integer number (6536970).

Almost surely, 2^129230818 is an apocalyptic number.

129230818 is a deficient number, since it is larger than the sum of its proper divisors (79952222).

129230818 is a wasteful number, since it uses less digits than its factorization.

129230818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 129230818 is about 11367.9733462038. The cubic root of 129230818 is about 505.5786172433.

The spelling of 129230818 in words is "one hundred twenty-nine million, two hundred thirty thousand, eight hundred eighteen".