128938548 has 48 divisors (see below), whose sum is σ = 311951360. Its totient is φ = 41407200.

The previous prime is 128938547. The next prime is 128938571. The reversal of 128938548 is 845839821.

It is a junction number, because it is equal to n+sod(n) for n = 128938497 and 128938506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128938543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100173 + ... + 101451.

Almost surely, 2^128938548 is an apocalyptic number.

It is an amenable number.

128938548 is an abundant number, since it is smaller than the sum of its proper divisors (183012812).

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

128938548 is a wasteful number, since it uses less digits than its factorization.

128938548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 1586 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 128938548 is about 11355.1110958898. Note that the first 3 decimals coincide. The cubic root of 128938548 is about 505.1971886208.

The spelling of 128938548 in words is "one hundred twenty-eight million, nine hundred thirty-eight thousand, five hundred forty-eight".