3222520 has 64 divisors (see below), whose sum is σ = 8786880. Its totient is φ = 1038336.

The previous prime is 3222493. The next prime is 3222547. The reversal of 3222520 is 252223.

It is an interprime number because it is at equal distance from previous prime (3222493) and next prime (3222547).

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3222494 and 3222503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4422 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (137295).

Almost surely, 2^3222520 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 3222520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4393440).

3222520 is an abundant number, since it is smaller than the sum of its proper divisors (5564360).

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

3222520 is a wasteful number, since it uses less digits than its factorization.

3222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 708 counting only the distinct ones).

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

The square root of 3222520 is about 1795.1378777130. The cubic root of 3222520 is about 147.7061371376.

Adding to 3222520 its reverse (252223), we get a palindrome (3474743).

The spelling of 3222520 in words is "three million, two hundred twenty-two thousand, five hundred twenty".