222354816 has 64 divisors (see below), whose sum is σ = 609715200. Its totient is φ = 71723520.

The previous prime is 222354799. The next prime is 222354827. The reversal of 222354816 is 618453222.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 2565 + ... + 21243.

It is an arithmetic number, because the mean of its divisors is an integer number (9526800).

Almost surely, 2^222354816 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 222354816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304857600).

222354816 is an abundant number, since it is smaller than the sum of its proper divisors (387360384).

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

222354816 is a wasteful number, since it uses less digits than its factorization.

222354816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18727 (or 18715 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 222354816 is about 14911.5665173046. The cubic root of 222354816 is about 605.8273097671.

The spelling of 222354816 in words is "two hundred twenty-two million, three hundred fifty-four thousand, eight hundred sixteen".