6490128 has 20 divisors (see below), whose sum is σ = 16766288. Its totient is φ = 2163360.

The previous prime is 6490123. The next prime is 6490139. The reversal of 6490128 is 8210946.

It is a super-2 number, since 2×6490128² = 84243522912768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6490095 and 6490104.

It is not an unprimeable number, because it can be changed into a prime (6490123) 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, 67558 + ... + 67653.

Almost surely, 2^6490128 is an apocalyptic number.

It is an amenable number.

6490128 is an abundant number, since it is smaller than the sum of its proper divisors (10276160).

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

6490128 is a wasteful number, since it uses less digits than its factorization.

6490128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135222 (or 135216 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 6490128 is about 2547.5729626450. The cubic root of 6490128 is about 186.5310295842.

The spelling of 6490128 in words is "six million, four hundred ninety thousand, one hundred twenty-eight".