3547216 has 20 divisors (see below), whose sum is σ = 6969172. Its totient is φ = 1748736.

The previous prime is 3547213. The next prime is 3547223. The reversal of 3547216 is 6127453.

It can be written as a sum of positive squares in 2 ways, for example, as 2547216 + 1000000 = 1596^2 + 1000^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3547213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351 + ... + 2686.

Almost surely, 2^3547216 is an apocalyptic number.

It is an amenable number.

3547216 is a deficient number, since it is larger than the sum of its proper divisors (3421956).

3547216 is a wasteful number, since it uses less digits than its factorization.

3547216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118 (or 3112 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 3547216 is about 1883.4054263488. The cubic root of 3547216 is about 152.5091421555.

The spelling of 3547216 in words is "three million, five hundred forty-seven thousand, two hundred sixteen".