22229856 has 96 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 6733440.

The previous prime is 22229849. The next prime is 22229873. The reversal of 22229856 is 65892222.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22229856.

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 15 ways as a sum of consecutive naturals, for example, 8335 + ... + 10673.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^22229856 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 22229856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).

22229856 is an abundant number, since it is smaller than the sum of its proper divisors (48531744).

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

22229856 is a wasteful number, since it uses less digits than its factorization.

22229856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2355 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 22229856 is about 4714.8548227915. The cubic root of 22229856 is about 281.1764109693.

The spelling of 22229856 in words is "twenty-two million, two hundred twenty-nine thousand, eight hundred fifty-six".