3855516 has 72 divisors (see below), whose sum is σ = 10725120. Its totient is φ = 1074528.

The previous prime is 3855503. The next prime is 3855539. The reversal of 3855516 is 6155583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46411 + ... + 46493.

It is an arithmetic number, because the mean of its divisors is an integer number (148960).

Almost surely, 2^3855516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3855516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5362560).

3855516 is an abundant number, since it is smaller than the sum of its proper divisors (6869604).

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

3855516 is a wasteful number, since it uses less digits than its factorization.

3855516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 174 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 3855516 is about 1963.5467908863. The cubic root of 3855516 is about 156.8053357028.

It can be divided in two parts, 3855 and 516, that added together give a triangular number (4371 = T₉₃).

The spelling of 3855516 in words is "three million, eight hundred fifty-five thousand, five hundred sixteen".