3806840 has 32 divisors (see below), whose sum is σ = 9018000. Its totient is φ = 1442304.

The previous prime is 3806839. The next prime is 3806843. The reversal of 3806840 is 486083.

3806840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806843) by changing a digit.

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, 1745 + ... + 3264.

Almost surely, 2^3806840 is an apocalyptic number.

It is an amenable number.

3806840 is an abundant number, since it is smaller than the sum of its proper divisors (5211160).

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

3806840 is a wasteful number, since it uses less digits than its factorization.

3806840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5035 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 3806840 is about 1951.1125031633. The cubic root of 3806840 is about 156.1426483943.

The spelling of 3806840 in words is "three million, eight hundred six thousand, eight hundred forty".