2102808 has 32 divisors (see below), whose sum is σ = 5387760. Its totient is φ = 683520.

The previous prime is 2102801. The next prime is 2102809. The reversal of 2102808 is 8082012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 2052.

2^2102808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2693880).

2102808 is an abundant number, since it is smaller than the sum of its proper divisors (3284952).

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

2102808 is a wasteful number, since it uses less digits than its factorization.

2102808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2102808 is about 1450.1062030072. The cubic root of 2102808 is about 128.1149683203.

The spelling of 2102808 in words is "two million, one hundred two thousand, eight hundred eight".