128228844 has 12 divisors (see below), whose sum is σ = 299200664. Its totient is φ = 42742944.

The previous prime is 128228833. The next prime is 128228851. The reversal of 128228844 is 448822821.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5342857 + ... + 5342880.

Almost surely, 2^128228844 is an apocalyptic number.

It is an amenable number.

128228844 is an abundant number, since it is smaller than the sum of its proper divisors (170971820).

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

128228844 is a wasteful number, since it uses less digits than its factorization.

128228844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685744 (or 10685742 counting only the distinct ones).

The product of its digits is 65536, while the sum is 39.

The square root of 128228844 is about 11323.8175541643. The cubic root of 128228844 is about 504.2685800791.

The spelling of 128228844 in words is "one hundred twenty-eight million, two hundred twenty-eight thousand, eight hundred forty-four".