129734868 has 12 divisors (see below), whose sum is σ = 302714720. Its totient is φ = 43244952.

The previous prime is 129734851. The next prime is 129734887. The reversal of 129734868 is 868437921.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×129734868² = 33662271949954848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405608 + ... + 5405631.

Almost surely, 2^129734868 is an apocalyptic number.

It is an amenable number.

129734868 is an abundant number, since it is smaller than the sum of its proper divisors (172979852).

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

129734868 is a wasteful number, since it uses less digits than its factorization.

129734868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10811246 (or 10811244 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 129734868 is about 11390.1215094484. The cubic root of 129734868 is about 506.2350816515.

The spelling of 129734868 in words is "one hundred twenty-nine million, seven hundred thirty-four thousand, eight hundred sixty-eight".