128085444 has 36 divisors (see below), whose sum is σ = 326924416. Its totient is φ = 42279408.

The previous prime is 128085439. The next prime is 128085457. The reversal of 128085444 is 444580821.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 128085399 and 128085408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13564 + ... + 20979.

Almost surely, 2^128085444 is an apocalyptic number.

It is an amenable number.

128085444 is an abundant number, since it is smaller than the sum of its proper divisors (198838972).

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

128085444 is a wasteful number, since it uses less digits than its factorization.

128085444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34656 (or 34651 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 128085444 is about 11317.4839960125. The cubic root of 128085444 is about 504.0805332384.

The spelling of 128085444 in words is "one hundred twenty-eight million, eighty-five thousand, four hundred forty-four".