128542448 has 40 divisors (see below), whose sum is σ = 266113920. Its totient is φ = 59970240.

The previous prime is 128542441. The next prime is 128542459. The reversal of 128542448 is 844245821.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128542441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17213 + ... + 23523.

It is an arithmetic number, because the mean of its divisors is an integer number (6652848).

Almost surely, 2^128542448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128542448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133056960).

128542448 is an abundant number, since it is smaller than the sum of its proper divisors (137571472).

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

128542448 is a wasteful number, since it uses less digits than its factorization.

128542448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6405 (or 6399 counting only the distinct ones).

The product of its digits is 81920, while the sum is 38.

The square root of 128542448 is about 11337.6561951754. The cubic root of 128542448 is about 504.6793350345.

The spelling of 128542448 in words is "one hundred twenty-eight million, five hundred forty-two thousand, four hundred forty-eight".