3853820 has 24 divisors (see below), whose sum is σ = 8137584. Its totient is φ = 1533056.

The previous prime is 3853813. The next prime is 3853847. The reversal of 3853820 is 283583.

It is a congruent number.

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, 4247 + ... + 5073.

It is an arithmetic number, because the mean of its divisors is an integer number (339066).

Almost surely, 2^3853820 is an apocalyptic number.

It is an amenable number.

3853820 is an abundant number, since it is smaller than the sum of its proper divisors (4283764).

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

3853820 is a wasteful number, since it uses less digits than its factorization.

3853820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 3853820 is about 1963.1148718300. The cubic root of 3853820 is about 156.7823400040.

The spelling of 3853820 in words is "three million, eight hundred fifty-three thousand, eight hundred twenty".