2818836 has 18 divisors (see below), whose sum is σ = 7125482. Its totient is φ = 939600.

The previous prime is 2818817. The next prime is 2818841. The reversal of 2818836 is 6388182.

It can be written as a sum of positive squares in only one way, i.e., 1838736 + 980100 = 1356^2 + 990^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 78301 = 2818836 / (2 + 8 + 1 + 8 + 8 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2818836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39115 + ... + 39186.

2^2818836 is an apocalyptic number.

It is an amenable number.

2818836 is an abundant number, since it is smaller than the sum of its proper divisors (4306646).

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

2818836 is a wasteful number, since it uses less digits than its factorization.

2818836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78311 (or 78306 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2818836 is about 1678.9389506471. The cubic root of 2818836 is about 141.2613231323.

It can be divided in two parts, 28188 and 36, that added together give a square (28224 = 168²).

The spelling of 2818836 in words is "two million, eight hundred eighteen thousand, eight hundred thirty-six".