129357468 has 36 divisors (see below), whose sum is σ = 327527928. Its totient is φ = 43047840.

The previous prime is 129357461. The next prime is 129357469. The reversal of 129357468 is 864753921.

129357468 is a `hidden beast` number, since 12 + 9 + 3 + 574 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129357461) 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, 21958 + ... + 27218.

It is an arithmetic number, because the mean of its divisors is an integer number (9097998).

Almost surely, 2^129357468 is an apocalyptic number.

129357468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129357468 is an abundant number, since it is smaller than the sum of its proper divisors (198170460).

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

129357468 is a wasteful number, since it uses less digits than its factorization.

129357468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5954 (or 5949 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 129357468 is about 11373.5424560688. The cubic root of 129357468 is about 505.7437239536.

The spelling of 129357468 in words is "one hundred twenty-nine million, three hundred fifty-seven thousand, four hundred sixty-eight".