3522220 has 96 divisors (see below), whose sum is σ = 9031680. Its totient is φ = 1140480.

The previous prime is 3522217. The next prime is 3522263. The reversal of 3522220 is 222253.

It is a junction number, because it is equal to n+sod(n) for n = 3522194 and 3522203.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113605 + ... + 113635.

It is an arithmetic number, because the mean of its divisors is an integer number (94080).

Almost surely, 2^3522220 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 3522220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4515840).

3522220 is an abundant number, since it is smaller than the sum of its proper divisors (5509460).

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

3522220 is a wasteful number, since it uses less digits than its factorization.

3522220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3522220 is about 1876.7578426638. The cubic root of 3522220 is about 152.1500710828.

Adding to 3522220 its reverse (222253), we get a palindrome (3744473).

The spelling of 3522220 in words is "three million, five hundred twenty-two thousand, two hundred twenty".