2281808 has 20 divisors (see below), whose sum is σ = 4681620. Its totient is φ = 1073664.

The previous prime is 2281793. The next prime is 2281813. The reversal of 2281808 is 8081822.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 399424 = 1372^2 + 632^2 .

It is a congruent number.

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, 3923 + ... + 4466.

It is an arithmetic number, because the mean of its divisors is an integer number (234081).

2^2281808 is an apocalyptic number.

It is an amenable number.

2281808 is an abundant number, since it is smaller than the sum of its proper divisors (2399812).

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

2281808 is a wasteful number, since it uses less digits than its factorization.

2281808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8414 (or 8408 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 2281808 is about 1510.5654570392. The cubic root of 2281808 is about 131.6516680738.

The spelling of 2281808 in words is "two million, two hundred eighty-one thousand, eight hundred eight".