128481876 has 96 divisors (see below), whose sum is σ = 355420800. Its totient is φ = 40520736.

The previous prime is 128481863. The next prime is 128481877. The reversal of 128481876 is 678184821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128481877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165826 + ... + 166598.

It is an arithmetic number, because the mean of its divisors is an integer number (3702300).

Almost surely, 2^128481876 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 128481876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177710400).

128481876 is an abundant number, since it is smaller than the sum of its proper divisors (226938924).

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

128481876 is an equidigital number, since it uses as much as digits as its factorization.

128481876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817 (or 797 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 128481876 is about 11334.9846051947. The cubic root of 128481876 is about 504.6000506164.

The spelling of 128481876 in words is "one hundred twenty-eight million, four hundred eighty-one thousand, eight hundred seventy-six".