3828215 has 16 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 2848032.

The previous prime is 3828169. The next prime is 3828217. The reversal of 3828215 is 5128283.

It is a cyclic number.

It is not a de Polignac number, because 3828215 - 2⁶ = 3828151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3828217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5264 + ... + 5946.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^3828215 is an apocalyptic number.

3828215 is a deficient number, since it is larger than the sum of its proper divisors (1096585).

3828215 is a wasteful number, since it uses less digits than its factorization.

3828215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766.

The product of its digits is 3840, while the sum is 29.

The square root of 3828215 is about 1956.5824797335. The cubic root of 3828215 is about 156.4343445571.

The spelling of 3828215 in words is "three million, eight hundred twenty-eight thousand, two hundred fifteen".