6881128 has 16 divisors (see below), whose sum is σ = 12952260. Its totient is φ = 3427200.

The previous prime is 6881123. The next prime is 6881131. The reversal of 6881128 is 8211886.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 917764 = 2442^2 + 958^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6881093 and 6881102.

It is not an unprimeable number, because it can be changed into a prime (6881123) 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, 718 + ... + 3778.

Almost surely, 2^6881128 is an apocalyptic number.

It is an amenable number.

6881128 is a deficient number, since it is larger than the sum of its proper divisors (6071132).

6881128 is a wasteful number, since it uses less digits than its factorization.

6881128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3344 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 6881128 is about 2623.1904238922. The cubic root of 6881128 is about 190.2041020005.

The spelling of 6881128 in words is "six million, eight hundred eighty-one thousand, one hundred twenty-eight".