2803216 has 20 divisors (see below), whose sum is σ = 5849452. Its totient is φ = 1293696.

The previous prime is 2803201. The next prime is 2803253. The reversal of 2803216 is 6123082.

It can be written as a sum of positive squares in 2 ways, for example, as 1123600 + 1679616 = 1060^2 + 1296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6531 + ... + 6946.

2^2803216 is an apocalyptic number.

2803216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2803216 is an abundant number, since it is smaller than the sum of its proper divisors (3046236).

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

2803216 is a wasteful number, since it uses less digits than its factorization.

2803216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13498 (or 13492 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2803216 is about 1674.2807410945. The cubic root of 2803216 is about 140.9999161678. Note that the first 4 decimals are identical.

Adding to 2803216 its reverse (6123082), we get a palindrome (8926298).

The spelling of 2803216 in words is "two million, eight hundred three thousand, two hundred sixteen".