129930318 has 40 divisors (see below), whose sum is σ = 332734512. Its totient is φ = 37122624.

The previous prime is 129930313. The next prime is 129930319. The reversal of 129930318 is 813039921.

It is a super-2 number, since 2×129930318² = 33763775071162248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129930313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56155 + ... + 58422.

Almost surely, 2^129930318 is an apocalyptic number.

129930318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

129930318 is an abundant number, since it is smaller than the sum of its proper divisors (202804194).

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

129930318 is a wasteful number, since it uses less digits than its factorization.

129930318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114598 (or 114589 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 129930318 is about 11398.6980835532. The cubic root of 129930318 is about 506.4891742288.

The spelling of 129930318 in words is "one hundred twenty-nine million, nine hundred thirty thousand, three hundred eighteen".