2022656 has 18 divisors (see below), whose sum is σ = 4037922. Its totient is φ = 1011200.

The previous prime is 2022649. The next prime is 2022659. The reversal of 2022656 is 6562202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 173056 = 1360^2 + 416^2 .

It is a super-4 number, since 4×2022656⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2022659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3695 + ... + 4206.

It is an arithmetic number, because the mean of its divisors is an integer number (224329).

2^2022656 is an apocalyptic number.

It is an amenable number.

2022656 is a deficient number, since it is larger than the sum of its proper divisors (2015266).

2022656 is an frugal number, since it uses more digits than its factorization.

2022656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7917 (or 7903 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2022656 is about 1422.2011109544. The cubic root of 2022656 is about 126.4660659811.

Adding to 2022656 its reverse (6562202), we get a palindrome (8584858).

The spelling of 2022656 in words is "two million, twenty-two thousand, six hundred fifty-six".