129574648 has 16 divisors (see below), whose sum is σ = 277660080. Its totient is φ = 55531968.

The previous prime is 129574631. The next prime is 129574649. The reversal of 129574648 is 846475921.

It is a junction number, because it is equal to n+sod(n) for n = 129574598 and 129574607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129574649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1156861 + ... + 1156972.

It is an arithmetic number, because the mean of its divisors is an integer number (17353755).

Almost surely, 2^129574648 is an apocalyptic number.

It is an amenable number.

129574648 is an abundant number, since it is smaller than the sum of its proper divisors (148085432).

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

129574648 is a wasteful number, since it uses less digits than its factorization.

129574648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313846 (or 2313842 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 129574648 is about 11383.0860490466. The cubic root of 129574648 is about 506.0265990277.

The spelling of 129574648 in words is "one hundred twenty-nine million, five hundred seventy-four thousand, six hundred forty-eight".