2560456 has 8 divisors (see below), whose sum is σ = 4800870. Its totient is φ = 1280224.

The previous prime is 2560433. The next prime is 2560457. The reversal of 2560456 is 6540652.

It can be written as a sum of positive squares in only one way, i.e., 2056356 + 504100 = 1434^2 + 710^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2560457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160021 + ... + 160036.

2^2560456 is an apocalyptic number.

It is an amenable number.

2560456 is a deficient number, since it is larger than the sum of its proper divisors (2240414).

2560456 is a wasteful number, since it uses less digits than its factorization.

2560456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320063 (or 320059 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2560456 is about 1600.1424936549. The cubic root of 2560456 is about 136.8061976377.

The spelling of 2560456 in words is "two million, five hundred sixty thousand, four hundred fifty-six".