855128044 has 12 divisors (see below), whose sum is σ = 1499601600. Its totient is φ = 426670448.

The previous prime is 855128039. The next prime is 855128051. The reversal of 855128044 is 440821558.

It is a junction number, because it is equal to n+sod(n) for n = 855127994 and 855128012.

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, 221239 + ... + 225070.

It is an arithmetic number, because the mean of its divisors is an integer number (124966800).

Almost surely, 2^855128044 is an apocalyptic number.

It is an amenable number.

855128044 is a deficient number, since it is larger than the sum of its proper divisors (644473556).

855128044 is a wasteful number, since it uses less digits than its factorization.

855128044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446792 (or 446790 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 855128044 is about 29242.5724586603. The cubic root of 855128044 is about 949.1693733119.

The spelling of 855128044 in words is "eight hundred fifty-five million, one hundred twenty-eight thousand, forty-four".