22100256 has 48 divisors (see below), whose sum is σ = 64461600. Its totient is φ = 7366464.

The previous prime is 22100251. The next prime is 22100261. The reversal of 22100256 is 65200122.

It is an interprime number because it is at equal distance from previous prime (22100251) and next prime (22100261).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22100251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11926 + ... + 13653.

It is an arithmetic number, because the mean of its divisors is an integer number (1342950).

Almost surely, 2^22100256 is an apocalyptic number.

It is an amenable number.

22100256 is an abundant number, since it is smaller than the sum of its proper divisors (42361344).

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

22100256 is a wasteful number, since it uses less digits than its factorization.

22100256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25598 (or 25584 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22100256 is about 4701.0909372187. The cubic root of 22100256 is about 280.6289264054.

Adding to 22100256 its reverse (65200122), we get a palindrome (87300378).

The spelling of 22100256 in words is "twenty-two million, one hundred thousand, two hundred fifty-six".