3831820 has 24 divisors (see below), whose sum is σ = 8087184. Its totient is φ = 1525056.

The previous prime is 3831811. The next prime is 3831827. The reversal of 3831820 is 281383.

It is not an unprimeable number, because it can be changed into a prime (3831827) 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, 5322 + ... + 5998.

It is an arithmetic number, because the mean of its divisors is an integer number (336966).

Almost surely, 2^3831820 is an apocalyptic number.

It is an amenable number.

3831820 is an abundant number, since it is smaller than the sum of its proper divisors (4255364).

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

3831820 is a wasteful number, since it uses less digits than its factorization.

3831820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 3831820 is about 1957.5035121297. The cubic root of 3831820 is about 156.4834334827.

The spelling of 3831820 in words is "three million, eight hundred thirty-one thousand, eight hundred twenty".