3813216 has 96 divisors (see below), whose sum is σ = 11467008. Its totient is φ = 1098240.

The previous prime is 3813211. The next prime is 3813221. The reversal of 3813216 is 6123183.

3813216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3813211) and next prime (3813221).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24210 + ... + 24366.

It is an arithmetic number, because the mean of its divisors is an integer number (119448).

Almost surely, 2^3813216 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 3813216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5733504).

3813216 is an abundant number, since it is smaller than the sum of its proper divisors (7653792).

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

3813216 is a wasteful number, since it uses less digits than its factorization.

3813216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 196 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 3813216 is about 1952.7457591812. The cubic root of 3813216 is about 156.2297731684.

Adding to 3813216 its reverse (6123183), we get a palindrome (9936399).

The spelling of 3813216 in words is "three million, eight hundred thirteen thousand, two hundred sixteen".