3521872 has 20 divisors (see below), whose sum is σ = 6983680. Its totient is φ = 1719648.

The previous prime is 3521867. The next prime is 3521909. The reversal of 3521872 is 2781253.

It is a self number, because there is not a number n which added to its sum of digits gives 3521872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1872 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (349184).

Almost surely, 2^3521872 is an apocalyptic number.

It is an amenable number.

3521872 is a deficient number, since it is larger than the sum of its proper divisors (3461808).

3521872 is a wasteful number, since it uses less digits than its factorization.

3521872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170 (or 5164 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 3521872 is about 1876.6651272936. The cubic root of 3521872 is about 152.1450600416.

The spelling of 3521872 in words is "three million, five hundred twenty-one thousand, eight hundred seventy-two".