3809872 has 20 divisors (see below), whose sum is σ = 8053056. Its totient is φ = 1731680.

The previous prime is 3809857. The next prime is 3809891. The reversal of 3809872 is 2789083.

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, 10648 + ... + 10999.

Almost surely, 2^3809872 is an apocalyptic number.

It is an amenable number.

3809872 is an abundant number, since it is smaller than the sum of its proper divisors (4243184).

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

3809872 is a wasteful number, since it uses less digits than its factorization.

3809872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666 (or 21660 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3809872 is about 1951.8893411257. The cubic root of 3809872 is about 156.1840912425.

The spelling of 3809872 in words is "three million, eight hundred nine thousand, eight hundred seventy-two".