2863644 has 48 divisors (see below), whose sum is σ = 7757568. Its totient is φ = 805248.

The previous prime is 2863607. The next prime is 2863649. The reversal of 2863644 is 4463682.

2863644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2863649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5899 + ... + 6365.

It is an arithmetic number, because the mean of its divisors is an integer number (161616).

2^2863644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2863644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3878784).

2863644 is an abundant number, since it is smaller than the sum of its proper divisors (4893924).

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

2863644 is a wasteful number, since it uses less digits than its factorization.

2863644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 552 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 2863644 is about 1692.2304807561. The cubic root of 2863644 is about 142.0058848318.

It can be divided in two parts, 28636 and 44, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 2863644 in words is "two million, eight hundred sixty-three thousand, six hundred forty-four".