2887644 has 24 divisors (see below), whose sum is σ = 6767488. Its totient is φ = 958320.

The previous prime is 2887631. The next prime is 2887649. The reversal of 2887644 is 4467882.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3609 + ... + 4335.

2^2887644 is an apocalyptic number.

It is an amenable number.

2887644 is an abundant number, since it is smaller than the sum of its proper divisors (3879844).

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

2887644 is a wasteful number, since it uses less digits than its factorization.

2887644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065 (or 1063 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 2887644 is about 1699.3069175402. The cubic root of 2887644 is about 142.4014954815.

It can be divided in two parts, 28876 and 44, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 2887644 in words is "two million, eight hundred eighty-seven thousand, six hundred forty-four".