2563456 has 32 divisors (see below), whose sum is σ = 5838480. Its totient is φ = 1098240.

The previous prime is 2563453. The next prime is 2563489. The reversal of 2563456 is 6543652.

It is a tau number, because it is divible by the number of its divisors (32).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563453) 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, 535 + ... + 2326.

2^2563456 is an apocalyptic number.

It is an amenable number.

2563456 is an abundant number, since it is smaller than the sum of its proper divisors (3275024).

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

2563456 is an equidigital number, since it uses as much as digits as its factorization.

2563456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882 (or 2870 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 2563456 is about 1601.0796357458. The cubic root of 2563456 is about 136.8596071874.

It can be divided in two parts, 256 and 3456, that multiplied together give a cube (884736 = 96³).

The spelling of 2563456 in words is "two million, five hundred sixty-three thousand, four hundred fifty-six".