2813816 has 8 divisors (see below), whose sum is σ = 5275920. Its totient is φ = 1406904.

The previous prime is 2813809. The next prime is 2813819. The reversal of 2813816 is 6183182.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175856 + ... + 175871.

It is an arithmetic number, because the mean of its divisors is an integer number (659490).

2^2813816 is an apocalyptic number.

It is an amenable number.

2813816 is a deficient number, since it is larger than the sum of its proper divisors (2462104).

2813816 is a wasteful number, since it uses less digits than its factorization.

2813816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351733 (or 351729 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 2813816 is about 1677.4432926332. The cubic root of 2813816 is about 141.1774169599.

Adding to 2813816 its reverse (6183182), we get a palindrome (8996998).

The spelling of 2813816 in words is "two million, eight hundred thirteen thousand, eight hundred sixteen".