129648366 has 24 divisors (see below), whose sum is σ = 283636080. Its totient is φ = 42795936.

The previous prime is 129648361. The next prime is 129648367. The reversal of 129648366 is 663846921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129648361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33111 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (11818170).

Almost surely, 2^129648366 is an apocalyptic number.

129648366 is an abundant number, since it is smaller than the sum of its proper divisors (153987714).

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

129648366 is a wasteful number, since it uses less digits than its factorization.

129648366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70040 (or 70037 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 129648366 is about 11386.3236384708. The cubic root of 129648366 is about 506.1225442284.

The spelling of 129648366 in words is "one hundred twenty-nine million, six hundred forty-eight thousand, three hundred sixty-six".