3506216 has 64 divisors (see below), whose sum is σ = 8294400. Its totient is φ = 1354752.

The previous prime is 3506213. The next prime is 3506249. The reversal of 3506216 is 6126053.

It is a junction number, because it is equal to n+sod(n) for n = 3506191 and 3506200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3506213) 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 15 ways as a sum of consecutive naturals, for example, 27545 + ... + 27671.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

Almost surely, 2^3506216 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 3506216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4147200).

3506216 is an abundant number, since it is smaller than the sum of its proper divisors (4788184).

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

3506216 is a wasteful number, since it uses less digits than its factorization.

3506216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 3506216 is about 1872.4892523056. The cubic root of 3506216 is about 151.9192784690.

The spelling of 3506216 in words is "three million, five hundred six thousand, two hundred sixteen".