2162644 has 24 divisors (see below), whose sum is σ = 4310208. Its totient is φ = 939840.

The previous prime is 2162639. The next prime is 2162647. The reversal of 2162644 is 4462612.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (179592).

2^2162644 is an apocalyptic number.

It is an amenable number.

2162644 is a deficient number, since it is larger than the sum of its proper divisors (2147564).

2162644 is a wasteful number, since it uses less digits than its factorization.

2162644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175 (or 2173 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2162644 is about 1470.5930776391. The cubic root of 2162644 is about 129.3188036487.

Subtracting 2162644 from its reverse (4462612), we obtain a cube (2299968 = 132³).

The spelling of 2162644 in words is "two million, one hundred sixty-two thousand, six hundred forty-four".