3871672 has 32 divisors (see below), whose sum is σ = 8478720. Its totient is φ = 1622880.

The previous prime is 3871669. The next prime is 3871691. The reversal of 3871672 is 2761783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897 + ... + 3367.

It is an arithmetic number, because the mean of its divisors is an integer number (264960).

Almost surely, 2^3871672 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 3871672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4239360).

3871672 is an abundant number, since it is smaller than the sum of its proper divisors (4607048).

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

3871672 is a wasteful number, since it uses less digits than its factorization.

3871672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 1527 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 3871672 is about 1967.6564740828. The cubic root of 3871672 is about 157.0240540856.

The spelling of 3871672 in words is "three million, eight hundred seventy-one thousand, six hundred seventy-two".