3871880 has 16 divisors (see below), whose sum is σ = 8711820. Its totient is φ = 1548736.

The previous prime is 3871871. The next prime is 3871883. The reversal of 3871880 is 881783.

It can be written as a sum of positive squares in 2 ways, for example, as 3865156 + 6724 = 1966^2 + 82^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3871880.

It is not an unprimeable number, because it can be changed into a prime (3871883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48359 + ... + 48438.

Almost surely, 2^3871880 is an apocalyptic number.

It is an amenable number.

3871880 is an abundant number, since it is smaller than the sum of its proper divisors (4839940).

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

3871880 is a wasteful number, since it uses less digits than its factorization.

3871880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96808 (or 96804 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 3871880 is about 1967.7093281275. The cubic root of 3871880 is about 157.0268659989.

The spelling of 3871880 in words is "three million, eight hundred seventy-one thousand, eight hundred eighty".