129662880 has 48 divisors (see below), whose sum is σ = 408439584. Its totient is φ = 34576640.

The previous prime is 129662873. The next prime is 129662887. The reversal of 129662880 is 88266921.

It is an interprime number because it is at equal distance from previous prime (129662873) and next prime (129662887).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (129662887) 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 7 ways as a sum of consecutive naturals, for example, 134586 + ... + 135545.

It is an arithmetic number, because the mean of its divisors is an integer number (8509158).

Almost surely, 2^129662880 is an apocalyptic number.

129662880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129662880 is an abundant number, since it is smaller than the sum of its proper divisors (278776704).

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

129662880 is a wasteful number, since it uses less digits than its factorization.

129662880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270149 (or 270141 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 129662880 is about 11386.9609641906. The cubic root of 129662880 is about 506.1414301549.

The spelling of 129662880 in words is "one hundred twenty-nine million, six hundred sixty-two thousand, eight hundred eighty".