2685128 has 8 divisors (see below), whose sum is σ = 5034630. Its totient is φ = 1342560.

The previous prime is 2685121. The next prime is 2685169. The reversal of 2685128 is 8215862.

It can be written as a sum of positive squares in only one way, i.e., 1435204 + 1249924 = 1198^2 + 1118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2685094 and 2685103.

It is not an unprimeable number, because it can be changed into a prime (2685121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167813 + ... + 167828.

2^2685128 is an apocalyptic number.

It is an amenable number.

2685128 is a deficient number, since it is larger than the sum of its proper divisors (2349502).

2685128 is a wasteful number, since it uses less digits than its factorization.

2685128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335647 (or 335643 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 2685128 is about 1638.6360181566. The cubic root of 2685128 is about 138.9915285626.

The spelling of 2685128 in words is "two million, six hundred eighty-five thousand, one hundred twenty-eight".