3868220 has 24 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 1539392.

The previous prime is 3868219. The next prime is 3868243. The reversal of 3868220 is 228683.

3868220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a congruent number.

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, 5021 + ... + 5739.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 2^3868220 is an apocalyptic number.

It is an amenable number.

3868220 is an abundant number, since it is smaller than the sum of its proper divisors (4296580).

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

3868220 is a wasteful number, since it uses less digits than its factorization.

3868220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 995 counting only the distinct ones).

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

The square root of 3868220 is about 1966.7790928317. The cubic root of 3868220 is about 156.9773724270.

The spelling of 3868220 in words is "three million, eight hundred sixty-eight thousand, two hundred twenty".