129801648 has 40 divisors (see below), whose sum is σ = 337590000. Its totient is φ = 42974464.

The previous prime is 129801601. The next prime is 129801667. The reversal of 129801648 is 846108921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1923 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (8439750).

Almost surely, 2^129801648 is an apocalyptic number.

It is an amenable number.

129801648 is an abundant number, since it is smaller than the sum of its proper divisors (207788352).

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

129801648 is a wasteful number, since it uses less digits than its factorization.

129801648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18309 (or 18303 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 129801648 is about 11393.0526199083. The cubic root of 129801648 is about 506.3219269240.

The spelling of 129801648 in words is "one hundred twenty-nine million, eight hundred one thousand, six hundred forty-eight".