129683448 has 48 divisors (see below), whose sum is σ = 351761280. Its totient is φ = 43161984.

The previous prime is 129683443. The next prime is 129683501. The reversal of 129683448 is 844386921.

It is a happy number.

129683448 is a `hidden beast` number, since 129 + 6 + 83 + 448 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129683441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77436 + ... + 79092.

It is an arithmetic number, because the mean of its divisors is an integer number (7328360).

Almost surely, 2^129683448 is an apocalyptic number.

129683448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129683448 is an abundant number, since it is smaller than the sum of its proper divisors (222077832).

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

129683448 is a wasteful number, since it uses less digits than its factorization.

129683448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 2749 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 129683448 is about 11387.8640666281. The cubic root of 129683448 is about 506.1681912616.

The spelling of 129683448 in words is "one hundred twenty-nine million, six hundred eighty-three thousand, four hundred forty-eight".