3871722 has 16 divisors (see below), whose sum is σ = 7805952. Its totient is φ = 1280160.

The previous prime is 3871691. The next prime is 3871759. The reversal of 3871722 is 2271783.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3871722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779 + ... + 3302.

It is an arithmetic number, because the mean of its divisors is an integer number (487872).

Almost surely, 2^3871722 is an apocalyptic number.

3871722 is an abundant number, since it is smaller than the sum of its proper divisors (3934230).

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

3871722 is a wasteful number, since it uses less digits than its factorization.

3871722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5213.

The product of its digits is 4704, while the sum is 30.

The square root of 3871722 is about 1967.6691795116. The cubic root of 3871722 is about 157.0247300355.

The spelling of 3871722 in words is "three million, eight hundred seventy-one thousand, seven hundred twenty-two".