3871000 has 96 divisors (see below), whose sum is σ = 10670400. Its totient is φ = 1310400.

The previous prime is 3870983. The next prime is 3871009. The reversal of 3871000 is 1783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48961 + ... + 49039.

It is an arithmetic number, because the mean of its divisors is an integer number (111150).

Almost surely, 2^3871000 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 3871000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5335200).

3871000 is an abundant number, since it is smaller than the sum of its proper divisors (6799400).

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

3871000 is a wasteful number, since it uses less digits than its factorization.

3871000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 3871000 is about 1967.4857051577. The cubic root of 3871000 is about 157.0149687541.

Adding to 3871000 its reverse (1783), we get a palindrome (3872783).

The spelling of 3871000 in words is "three million, eight hundred seventy-one thousand".