128857848 has 192 divisors, whose sum is σ = 404928000. Its totient is φ = 33965568.

The previous prime is 128857837. The next prime is 128857877. The reversal of 128857848 is 848758821.

It is a super-2 number, since 2×128857848² = 33208689982382208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128857848.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1631073 + ... + 1631151.

It is an arithmetic number, because the mean of its divisors is an integer number (2109000).

Almost surely, 2^128857848 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 128857848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202464000).

128857848 is an abundant number, since it is smaller than the sum of its proper divisors (276070152).

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

128857848 is a wasteful number, since it uses less digits than its factorization.

128857848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 183 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 51.

The square root of 128857848 is about 11351.5570738115. The cubic root of 128857848 is about 505.0917690953.

The spelling of 128857848 in words is "one hundred twenty-eight million, eight hundred fifty-seven thousand, eight hundred forty-eight".