6430256 has 20 divisors (see below), whose sum is σ = 14238672. Its totient is φ = 2755776.

The previous prime is 6430253. The next prime is 6430261. The reversal of 6430256 is 6520346.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6430253) 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, 28595 + ... + 28818.

Almost surely, 2^6430256 is an apocalyptic number.

It is an amenable number.

6430256 is an abundant number, since it is smaller than the sum of its proper divisors (7808416).

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

6430256 is a wasteful number, since it uses less digits than its factorization.

6430256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57428 (or 57422 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 6430256 is about 2535.7949443912. The cubic root of 6430256 is about 185.9556683186.

The spelling of 6430256 in words is "six million, four hundred thirty thousand, two hundred fifty-six".