22155848 has 64 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 9158400.

The previous prime is 22155841. The next prime is 22155863. The reversal of 22155848 is 84855122.

It is a happy number.

It is a Cunningham number, because it is equal to 4707²-1.

It is not an unprimeable number, because it can be changed into a prime (22155841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122318 + ... + 122498.

It is an arithmetic number, because the mean of its divisors is an integer number (773955).

Almost surely, 2^22155848 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 22155848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24766560).

22155848 is an abundant number, since it is smaller than the sum of its proper divisors (27377272).

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

22155848 is a wasteful number, since it uses less digits than its factorization.

22155848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 314 counting only the distinct ones).

The product of its digits is 25600, while the sum is 35.

The square root of 22155848 is about 4706.9998937752. Note that the first 3 decimals coincide. The cubic root of 22155848 is about 280.8640316851.

The spelling of 22155848 in words is "twenty-two million, one hundred fifty-five thousand, eight hundred forty-eight".