3805872 has 80 divisors (see below), whose sum is σ = 11523072. Its totient is φ = 1059840.

The previous prime is 3805861. The next prime is 3805889. The reversal of 3805872 is 2785083.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15672 + ... + 15912.

Almost surely, 2^3805872 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 3805872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5761536).

3805872 is an abundant number, since it is smaller than the sum of its proper divisors (7717200).

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

3805872 is a wasteful number, since it uses less digits than its factorization.

3805872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 3805872 is about 1950.8644237876. The cubic root of 3805872 is about 156.1294126663.

The spelling of 3805872 in words is "three million, eight hundred five thousand, eight hundred seventy-two".