2007864 has 48 divisors (see below), whose sum is σ = 5522400. Its totient is φ = 658944.

The previous prime is 2007851. The next prime is 2007869. The reversal of 2007864 is 4687002.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2007869) 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 11 ways as a sum of consecutive naturals, for example, 5512 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (115050).

2^2007864 is an apocalyptic number.

2007864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2007864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2761200).

2007864 is an abundant number, since it is smaller than the sum of its proper divisors (3514536).

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

2007864 is a wasteful number, since it uses less digits than its factorization.

2007864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2007864 is about 1416.9911785188. The cubic root of 2007864 is about 126.1570226781.

The spelling of 2007864 in words is "two million, seven thousand, eight hundred sixty-four".