2865800 has 96 divisors (see below), whose sum is σ = 8035200. Its totient is φ = 929280.

The previous prime is 2865787. The next prime is 2865803. The reversal of 2865800 is 85682.

It is a happy number.

2865800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865803) 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 23 ways as a sum of consecutive naturals, for example, 32156 + ... + 32244.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2^2865800 is an apocalyptic number.

2865800 is a gapful number since it is divisible by the number (20) 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 2865800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4017600).

2865800 is an abundant number, since it is smaller than the sum of its proper divisors (5169400).

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

2865800 is a wasteful number, since it uses less digits than its factorization.

2865800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2865800 is about 1692.8673899630. The cubic root of 2865800 is about 142.0415140143.

The spelling of 2865800 in words is "two million, eight hundred sixty-five thousand, eight hundred".