22771056 has 160 divisors (see below), whose sum is σ = 75280896. Its totient is φ = 5760000.

The previous prime is 22771043. The next prime is 22771057. The reversal of 22771056 is 65017722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22771057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225406 + ... + 225506.

Almost surely, 2^22771056 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 22771056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37640448).

22771056 is an abundant number, since it is smaller than the sum of its proper divisors (52509840).

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

22771056 is a wasteful number, since it uses less digits than its factorization.

22771056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 22771056 is about 4771.9027651452. The cubic root of 22771056 is about 283.4399463452.

Adding to 22771056 its reverse (65017722), we get a palindrome (87788778).

It can be divided in two parts, 2277 and 1056, that added together give a palindrome (3333).

The spelling of 22771056 in words is "twenty-two million, seven hundred seventy-one thousand, fifty-six".