3828865 has 4 divisors (see below), whose sum is σ = 4594644. Its totient is φ = 3063088.

The previous prime is 3828857. The next prime is 3828887. The reversal of 3828865 is 5688283.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 2852721 = 988^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 3828865 - 2³ = 3828857 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 382882 + ... + 382891.

It is an arithmetic number, because the mean of its divisors is an integer number (1148661).

Almost surely, 2^3828865 is an apocalyptic number.

It is an amenable number.

3828865 is a deficient number, since it is larger than the sum of its proper divisors (765779).

3828865 is an equidigital number, since it uses as much as digits as its factorization.

3828865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765778.

The product of its digits is 92160, while the sum is 40.

The square root of 3828865 is about 1956.7485786375. The cubic root of 3828865 is about 156.4431978190.

The spelling of 3828865 in words is "three million, eight hundred twenty-eight thousand, eight hundred sixty-five".