129857304 has 32 divisors (see below), whose sum is σ = 326016000. Its totient is φ = 43102752.

The previous prime is 129857297. The next prime is 129857311. The reversal of 129857304 is 403758921.

It is an interprime number because it is at equal distance from previous prime (129857297) and next prime (129857311).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5584 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (10188000).

Almost surely, 2^129857304 is an apocalyptic number.

It is an amenable number.

129857304 is an abundant number, since it is smaller than the sum of its proper divisors (196158696).

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

129857304 is a wasteful number, since it uses less digits than its factorization.

129857304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22887 (or 22883 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 129857304 is about 11395.4948993012. The cubic root of 129857304 is about 506.3942830328.

The spelling of 129857304 in words is "one hundred twenty-nine million, eight hundred fifty-seven thousand, three hundred four".