2018864 has 40 divisors (see below), whose sum is σ = 4278000. Its totient is φ = 919296.

The previous prime is 2018851. The next prime is 2018873. The reversal of 2018864 is 4688102.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8702 + ... + 8930.

It is an arithmetic number, because the mean of its divisors is an integer number (106950).

2^2018864 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 2018864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2139000).

2018864 is an abundant number, since it is smaller than the sum of its proper divisors (2259136).

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

2018864 is a wasteful number, since it uses less digits than its factorization.

2018864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2018864 is about 1420.8673407465. The cubic root of 2018864 is about 126.3869852540.

It can be divided in two parts, 2018 and 864, that added together give a palindrome (2882).

The spelling of 2018864 in words is "two million, eighteen thousand, eight hundred sixty-four".