2865218 has 8 divisors (see below), whose sum is σ = 4329612. Its totient is φ = 1422016.

The previous prime is 2865211. The next prime is 2865241. The reversal of 2865218 is 8125682.

It can be written as a sum of positive squares in 2 ways, for example, as 2647129 + 218089 = 1627^2 + 467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2865211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4955 + ... + 5502.

2^2865218 is an apocalyptic number.

2865218 is a deficient number, since it is larger than the sum of its proper divisors (1464394).

2865218 is a wasteful number, since it uses less digits than its factorization.

2865218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10596.

The product of its digits is 7680, while the sum is 32.

The square root of 2865218 is about 1692.6954835410. The cubic root of 2865218 is about 142.0318978794.

The spelling of 2865218 in words is "two million, eight hundred sixty-five thousand, two hundred eighteen".