3858220 has 24 divisors (see below), whose sum is σ = 8139600. Its totient is φ = 1536192.

The previous prime is 3858199. The next prime is 3858233. The reversal of 3858220 is 228583.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7326 + ... + 7834.

It is an arithmetic number, because the mean of its divisors is an integer number (339150).

Almost surely, 2^3858220 is an apocalyptic number.

It is an amenable number.

3858220 is an abundant number, since it is smaller than the sum of its proper divisors (4281380).

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

3858220 is a wasteful number, since it uses less digits than its factorization.

3858220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 3858220 is about 1964.2352201302. The cubic root of 3858220 is about 156.8419847137.

The spelling of 3858220 in words is "three million, eight hundred fifty-eight thousand, two hundred twenty".