3821808 has 20 divisors (see below), whose sum is σ = 9873128. Its totient is φ = 1273920.

The previous prime is 3821803. The next prime is 3821809. The reversal of 3821808 is 8081283.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821801) 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, 39763 + ... + 39858.

Almost surely, 2^3821808 is an apocalyptic number.

It is an amenable number.

3821808 is an abundant number, since it is smaller than the sum of its proper divisors (6051320).

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

3821808 is a wasteful number, since it uses less digits than its factorization.

3821808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79632 (or 79626 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 3821808 is about 1954.9445004910. The cubic root of 3821808 is about 156.3470249656.

The spelling of 3821808 in words is "three million, eight hundred twenty-one thousand, eight hundred eight".