3721836 has 24 divisors (see below), whose sum is σ = 8870400. Its totient is φ = 1214032.

The previous prime is 3721813. The next prime is 3721847. The reversal of 3721836 is 6381273.

3721836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2736 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (369600).

Almost surely, 2^3721836 is an apocalyptic number.

It is an amenable number.

3721836 is an abundant number, since it is smaller than the sum of its proper divisors (5148564).

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

3721836 is a wasteful number, since it uses less digits than its factorization.

3721836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653 (or 6651 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 3721836 is about 1929.2060543135. The cubic root of 3721836 is about 154.9717048593.

The spelling of 3721836 in words is "three million, seven hundred twenty-one thousand, eight hundred thirty-six".