3581872 has 20 divisors (see below), whose sum is σ = 7931536. Its totient is φ = 1535040.

The previous prime is 3581869. The next prime is 3581873. The reversal of 3581872 is 2781853.

It is not an unprimeable number, because it can be changed into a prime (3581873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15879 + ... + 16102.

Almost surely, 2^3581872 is an apocalyptic number.

It is an amenable number.

3581872 is an abundant number, since it is smaller than the sum of its proper divisors (4349664).

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

3581872 is a wasteful number, since it uses less digits than its factorization.

3581872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31996 (or 31990 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 3581872 is about 1892.5834195617. The cubic root of 3581872 is about 153.0042005482.

The spelling of 3581872 in words is "three million, five hundred eighty-one thousand, eight hundred seventy-two".