3818220 has 48 divisors (see below), whose sum is σ = 12219648. Its totient is φ = 872640.

The previous prime is 3818219. The next prime is 3818231. The reversal of 3818220 is 228183.

3818220 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 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 15 ways as a sum of consecutive naturals, for example, 4126 + ... + 4965.

It is an arithmetic number, because the mean of its divisors is an integer number (254576).

Almost surely, 2^3818220 is an apocalyptic number.

3818220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3818220 is an abundant number, since it is smaller than the sum of its proper divisors (8401428).

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

3818220 is a wasteful number, since it uses less digits than its factorization.

3818220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110 (or 9108 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 3818220 is about 1954.0266118966. The cubic root of 3818220 is about 156.2980822690.

The spelling of 3818220 in words is "three million, eight hundred eighteen thousand, two hundred twenty".