3821868 has 18 divisors (see below), whose sum is σ = 9660924. Its totient is φ = 1273944.

The previous prime is 3821863. The next prime is 3821893. The reversal of 3821868 is 8681283.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 106163 = 3821868 / (3 + 8 + 2 + 1 + 8 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (3821863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53046 + ... + 53117.

It is an arithmetic number, because the mean of its divisors is an integer number (536718).

Almost surely, 2^3821868 is an apocalyptic number.

It is an amenable number.

3821868 is an abundant number, since it is smaller than the sum of its proper divisors (5839056).

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

3821868 is a wasteful number, since it uses less digits than its factorization.

3821868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106173 (or 106168 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 3821868 is about 1954.9598461350. The cubic root of 3821868 is about 156.3478431449.

The spelling of 3821868 in words is "three million, eight hundred twenty-one thousand, eight hundred sixty-eight".