2116808 has 8 divisors (see below), whose sum is σ = 3969030. Its totient is φ = 1058400.

The previous prime is 2116801. The next prime is 2116811. The reversal of 2116808 is 8086112.

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 315844 = 1342^2 + 562^2 .

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

It is a super-2 number, since 2×2116808² = 8961752217728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2116801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132293 + ... + 132308.

2^2116808 is an apocalyptic number.

It is an amenable number.

2116808 is a deficient number, since it is larger than the sum of its proper divisors (1852222).

2116808 is a wasteful number, since it uses less digits than its factorization.

2116808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264607 (or 264603 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2116808 is about 1454.9254276423. The cubic root of 2116808 is about 128.3986594193.

The spelling of 2116808 in words is "two million, one hundred sixteen thousand, eight hundred eight".