2162864 has 20 divisors (see below), whose sum is σ = 4571880. Its totient is φ = 983040.

The previous prime is 2162843. The next prime is 2162869. The reversal of 2162864 is 4682612.

It is not an unprimeable number, because it can be changed into a prime (2162869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5969 + ... + 6320.

It is an arithmetic number, because the mean of its divisors is an integer number (228594).

2^2162864 is an apocalyptic number.

It is an amenable number.

2162864 is an abundant number, since it is smaller than the sum of its proper divisors (2409016).

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

2162864 is a wasteful number, since it uses less digits than its factorization.

2162864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12308 (or 12302 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 2162864 is about 1470.6678754906. The cubic root of 2162864 is about 129.3231885856.

The spelling of 2162864 in words is "two million, one hundred sixty-two thousand, eight hundred sixty-four".