3857216 has 28 divisors (see below), whose sum is σ = 8351520. Its totient is φ = 1752960.

The previous prime is 3857207. The next prime is 3857233. The reversal of 3857216 is 6127583.

It is a happy number.

3857216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a d-powerful number, because it can be written as 3⁷ + 8⁷ + 5⁷ + 7 + 2⁷ + 1 + 6⁸ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036 + ... + 3443.

Almost surely, 2^3857216 is an apocalyptic number.

It is an amenable number.

3857216 is an abundant number, since it is smaller than the sum of its proper divisors (4494304).

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

3857216 is a wasteful number, since it uses less digits than its factorization.

3857216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502 (or 5492 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 3857216 is about 1963.9796332956. The cubic root of 3857216 is about 156.8283788701.

The spelling of 3857216 in words is "three million, eight hundred fifty-seven thousand, two hundred sixteen".