3871500 has 96 divisors (see below), whose sum is σ = 11793600. Its totient is φ = 985600.

The previous prime is 3871499. The next prime is 3871501. The reversal of 3871500 is 51783.

It is an interprime number because it is at equal distance from previous prime (3871499) and next prime (3871501).

It is not an unprimeable number, because it can be changed into a prime (3871501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43456 + ... + 43544.

It is an arithmetic number, because the mean of its divisors is an integer number (122850).

Almost surely, 2^3871500 is an apocalyptic number.

3871500 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 3871500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5896800).

3871500 is an abundant number, since it is smaller than the sum of its proper divisors (7922100).

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

3871500 is a wasteful number, since it uses less digits than its factorization.

3871500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 3871500 is about 1967.6127667811. The cubic root of 3871500 is about 157.0217287735.

It can be divided in two parts, 3871 and 500, that added together give a triangular number (4371 = T₉₃).

The spelling of 3871500 in words is "three million, eight hundred seventy-one thousand, five hundred".