22262656 has 64 divisors (see below), whose sum is σ = 50636880. Its totient is φ = 9658368.

The previous prime is 22262599. The next prime is 22262659. The reversal of 22262656 is 65626222.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22262659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27895 + ... + 28681.

Almost surely, 2^22262656 is an apocalyptic number.

22262656 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22262656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25318440).

22262656 is an abundant number, since it is smaller than the sum of its proper divisors (28374224).

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

22262656 is a wasteful number, since it uses less digits than its factorization.

22262656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 819 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 22262656 is about 4718.3319086304. The cubic root of 22262656 is about 281.3146342975.

Adding to 22262656 its reverse (65626222), we get a palindrome (87888878).

The spelling of 22262656 in words is "twenty-two million, two hundred sixty-two thousand, six hundred fifty-six".