2563844 has 12 divisors (see below), whose sum is σ = 4504668. Its totient is φ = 1276800.

The previous prime is 2563837. The next prime is 2563849. The reversal of 2563844 is 4483652.

2563844 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 925444 = 1280^2 + 962^2 .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 2563844.

It is not an unprimeable number, because it can be changed into a prime (2563849) 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, 17 + ... + 2264.

It is an arithmetic number, because the mean of its divisors is an integer number (375389).

2^2563844 is an apocalyptic number.

It is an amenable number.

2563844 is a deficient number, since it is larger than the sum of its proper divisors (1940824).

2563844 is a wasteful number, since it uses less digits than its factorization.

2563844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 2564 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 2563844 is about 1601.2007994003. The cubic root of 2563844 is about 136.8665117788.

It can be divided in two parts, 256 and 3844, that multiplied together give a square (984064 = 992²).

The spelling of 2563844 in words is "two million, five hundred sixty-three thousand, eight hundred forty-four".