2287805 has 16 divisors (see below), whose sum is σ = 3010224. Its totient is φ = 1658880.

The previous prime is 2287777. The next prime is 2287807. The reversal of 2287805 is 5087822.

It can be written as a sum of positive squares in 8 ways, for example, as 106276 + 2181529 = 326^2 + 1477^2 .

It is not a de Polignac number, because 2287805 - 2¹² = 2283709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3677 + ... + 4253.

It is an arithmetic number, because the mean of its divisors is an integer number (188139).

2^2287805 is an apocalyptic number.

It is an amenable number.

2287805 is a deficient number, since it is larger than the sum of its proper divisors (722419).

2287805 is a wasteful number, since it uses less digits than its factorization.

2287805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2287805 is about 1512.5491727544. The cubic root of 2287805 is about 131.7669019000.

The spelling of 2287805 in words is "two million, two hundred eighty-seven thousand, eight hundred five".