855069128 has 16 divisors (see below), whose sum is σ = 1697563980. Its totient is φ = 402385408.

The previous prime is 855069121. The next prime is 855069133. The reversal of 855069128 is 821960558.

It can be written as a sum of positive squares in 2 ways, for example, as 747366244 + 107702884 = 27338^2 + 10378^2 .

It is a super-2 number, since 2×855069128² = 1462286427317360768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (855069121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143501 + ... + 3143772.

Almost surely, 2^855069128 is an apocalyptic number.

It is an amenable number.

855069128 is a deficient number, since it is larger than the sum of its proper divisors (842494852).

855069128 is a wasteful number, since it uses less digits than its factorization.

855069128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287296 (or 6287292 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 855069128 is about 29241.5650743937. The cubic root of 855069128 is about 949.1475744139.

The spelling of 855069128 in words is "eight hundred fifty-five million, sixty-nine thousand, one hundred twenty-eight".