3845220 has 48 divisors (see below), whose sum is σ = 11336640. Its totient is φ = 971136.

The previous prime is 3845183. The next prime is 3845221. The reversal of 3845220 is 225483.

3845220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3845221) 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 15 ways as a sum of consecutive naturals, for example, 547 + ... + 2826.

It is an arithmetic number, because the mean of its divisors is an integer number (236180).

Almost surely, 2^3845220 is an apocalyptic number.

3845220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3845220 is an abundant number, since it is smaller than the sum of its proper divisors (7491420).

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

3845220 is a wasteful number, since it uses less digits than its factorization.

3845220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 3845220 is about 1960.9232519403. The cubic root of 3845220 is about 156.6656304946.

The spelling of 3845220 in words is "three million, eight hundred forty-five thousand, two hundred twenty".