129967692 has 12 divisors (see below), whose sum is σ = 303257976. Its totient is φ = 43322560.

The previous prime is 129967639. The next prime is 129967697. The reversal of 129967692 is 296769921.

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

It is not an unprimeable number, because it can be changed into a prime (129967697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5415309 + ... + 5415332.

It is an arithmetic number, because the mean of its divisors is an integer number (25271498).

Almost surely, 2^129967692 is an apocalyptic number.

129967692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129967692 is an abundant number, since it is smaller than the sum of its proper divisors (173290284).

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

129967692 is a wasteful number, since it uses less digits than its factorization.

129967692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830648 (or 10830646 counting only the distinct ones).

The product of its digits is 734832, while the sum is 51.

The square root of 129967692 is about 11400.3373634292. The cubic root of 129967692 is about 506.5377328511.

The spelling of 129967692 in words is "one hundred twenty-nine million, nine hundred sixty-seven thousand, six hundred ninety-two".