3573216 has 72 divisors (see below), whose sum is σ = 10712520. Its totient is φ = 1126656.

The previous prime is 3573209. The next prime is 3573221. The reversal of 3573216 is 6123753.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 3573216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5146 + ... + 5798.

It is an arithmetic number, because the mean of its divisors is an integer number (148785).

Almost surely, 2^3573216 is an apocalyptic number.

3573216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3573216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5356260).

3573216 is an abundant number, since it is smaller than the sum of its proper divisors (7139304).

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

3573216 is a wasteful number, since it uses less digits than its factorization.

3573216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 677 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3573216 is about 1890.2952150392. The cubic root of 3573216 is about 152.8808504627.

Adding to 3573216 its reverse (6123753), we get a palindrome (9696969).

The spelling of 3573216 in words is "three million, five hundred seventy-three thousand, two hundred sixteen".