129382368 has 24 divisors (see below), whose sum is σ = 339628968. Its totient is φ = 43127424.

The previous prime is 129382333. The next prime is 129382417. The reversal of 129382368 is 863283921.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673771 + ... + 673962.

It is an arithmetic number, because the mean of its divisors is an integer number (14151207).

Almost surely, 2^129382368 is an apocalyptic number.

It is an amenable number.

129382368 is an abundant number, since it is smaller than the sum of its proper divisors (210246600).

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

129382368 is a wasteful number, since it uses less digits than its factorization.

129382368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347746 (or 1347738 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 129382368 is about 11374.6370491546. The cubic root of 129382368 is about 505.7761720500.

The spelling of 129382368 in words is "one hundred twenty-nine million, three hundred eighty-two thousand, three hundred sixty-eight".