2869644 has 12 divisors (see below), whose sum is σ = 6695864. Its totient is φ = 956544.

The previous prime is 2869621. The next prime is 2869649. The reversal of 2869644 is 4469682.

2869644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2869649) 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 3 ways as a sum of consecutive naturals, for example, 119557 + ... + 119580.

2^2869644 is an apocalyptic number.

It is an amenable number.

2869644 is an abundant number, since it is smaller than the sum of its proper divisors (3826220).

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

2869644 is a wasteful number, since it uses less digits than its factorization.

2869644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239144 (or 239142 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 2869644 is about 1694.0023612734. The cubic root of 2869644 is about 142.1049940938.

The spelling of 2869644 in words is "two million, eight hundred sixty-nine thousand, six hundred forty-four".