22471056 has 60 divisors (see below), whose sum is σ = 65068380. Its totient is φ = 7230720.

The previous prime is 22471039. The next prime is 22471061. The reversal of 22471056 is 65017422.

It can be written as a sum of positive squares in 2 ways, for example, as 9511056 + 12960000 = 3084^2 + 3600^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1486 + ... + 6866.

It is an arithmetic number, because the mean of its divisors is an integer number (1084473).

Almost surely, 2^22471056 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 22471056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32534190).

22471056 is an abundant number, since it is smaller than the sum of its proper divisors (42597324).

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

22471056 is a wasteful number, since it uses less digits than its factorization.

22471056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5424 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22471056 is about 4740.3645429439. The cubic root of 22471056 is about 282.1897018441.

Adding to 22471056 its reverse (65017422), we get a palindrome (87488478).

The spelling of 22471056 in words is "twenty-two million, four hundred seventy-one thousand, fifty-six".