3871860 has 48 divisors (see below), whose sum is σ = 11079936. Its totient is φ = 1009792.

The previous prime is 3871841. The next prime is 3871871. The reversal of 3871860 is 681783.

3871860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 2134 + ... + 3506.

It is an arithmetic number, because the mean of its divisors is an integer number (230832).

Almost surely, 2^3871860 is an apocalyptic number.

3871860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3871860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5539968).

3871860 is an abundant number, since it is smaller than the sum of its proper divisors (7208076).

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

3871860 is a wasteful number, since it uses less digits than its factorization.

3871860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 3871860 is about 1967.7042460695. The cubic root of 3871860 is about 157.0265956270.

The spelling of 3871860 in words is "three million, eight hundred seventy-one thousand, eight hundred sixty".