8003816 has 16 divisors (see below), whose sum is σ = 15660000. Its totient is φ = 3827824.

The previous prime is 8003813. The next prime is 8003819. The reversal of 8003816 is 6183008.

It is an interprime number because it is at equal distance from previous prime (8003813) and next prime (8003819).

It is a super-2 number, since 2×8003816² = 128122141123712, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8003813) 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, 21566 + ... + 21933.

It is an arithmetic number, because the mean of its divisors is an integer number (978750).

Almost surely, 2^8003816 is an apocalyptic number.

It is an amenable number.

8003816 is a deficient number, since it is larger than the sum of its proper divisors (7656184).

8003816 is a wasteful number, since it uses less digits than its factorization.

8003816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43528 (or 43524 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8003816 is about 2829.1016241910. The cubic root of 8003816 is about 200.0317949451.

The spelling of 8003816 in words is "eight million, three thousand, eight hundred sixteen".