2220756 has 12 divisors (see below), whose sum is σ = 5181792. Its totient is φ = 740248.

The previous prime is 2220749. The next prime is 2220773. The reversal of 2220756 is 6570222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 2¹⁴ + 2¹⁸ + 2¹⁸ + 0 + 7³ + 5³ + 6⁸ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92520 + ... + 92543.

It is an arithmetic number, because the mean of its divisors is an integer number (431816).

2^2220756 is an apocalyptic number.

It is an amenable number.

2220756 is an abundant number, since it is smaller than the sum of its proper divisors (2961036).

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

2220756 is a wasteful number, since it uses less digits than its factorization.

2220756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185070 (or 185068 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 2220756 is about 1490.2201179692. The cubic root of 2220756 is about 130.4668813948.

Adding to 2220756 its reverse (6570222), we get a palindrome (8790978).

The spelling of 2220756 in words is "two million, two hundred twenty thousand, seven hundred fifty-six".