129876368 has 20 divisors (see below), whose sum is σ = 251984988. Its totient is φ = 64848000.

The previous prime is 129876367. The next prime is 129876389. The reversal of 129876368 is 863678921.

It can be written as a sum of positive squares in 2 ways, for example, as 21049744 + 108826624 = 4588^2 + 10432^2 .

It is not an unprimeable number, because it can be changed into a prime (129876367) 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, 7118 + ... + 17618.

Almost surely, 2^129876368 is an apocalyptic number.

It is an amenable number.

129876368 is a deficient number, since it is larger than the sum of its proper divisors (122108620).

129876368 is a wasteful number, since it uses less digits than its factorization.

129876368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282 (or 11276 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 129876368 is about 11396.3313395145. The cubic root of 129876368 is about 506.4190626125.

The spelling of 129876368 in words is "one hundred twenty-nine million, eight hundred seventy-six thousand, three hundred sixty-eight".