3855020 has 24 divisors (see below), whose sum is σ = 8718864. Its totient is φ = 1423296.

The previous prime is 3855013. The next prime is 3855023. The reversal of 3855020 is 205583.

It is a super-2 number, since 2×3855020² = 29722358400800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7154 + ... + 7673.

It is an arithmetic number, because the mean of its divisors is an integer number (363286).

Almost surely, 2^3855020 is an apocalyptic number.

It is an amenable number.

3855020 is an abundant number, since it is smaller than the sum of its proper divisors (4863844).

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

3855020 is a wasteful number, since it uses less digits than its factorization.

3855020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14849 (or 14847 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 3855020 is about 1963.4204847663. The cubic root of 3855020 is about 156.7986112434.

The spelling of 3855020 in words is "three million, eight hundred fifty-five thousand, twenty".