222065844 has 288 divisors, whose sum is σ = 750758400. Its totient is φ = 50077440.

The previous prime is 222065843. The next prime is 222065861. The reversal of 222065844 is 448560222.

222065844 = T₄₉₆ + T₄₉₇ + ... + T₁₁₃₂.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222065843) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1597527 + ... + 1597665.

It is an arithmetic number, because the mean of its divisors is an integer number (2606800).

Almost surely, 2^222065844 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 222065844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375379200).

222065844 is an abundant number, since it is smaller than the sum of its proper divisors (528692556).

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

222065844 is a wasteful number, since it uses less digits than its factorization.

222065844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 222065844 is about 14901.8738419032. The cubic root of 222065844 is about 605.5647518933.

The spelling of 222065844 in words is "two hundred twenty-two million, sixty-five thousand, eight hundred forty-four".