222445816 has 16 divisors (see below), whose sum is σ = 441620640. Its totient is φ = 104680320.

The previous prime is 222445793. The next prime is 222445913. The reversal of 222445816 is 618544222.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 3 ways as a sum of consecutive naturals, for example, 817680 + ... + 817951.

It is an arithmetic number, because the mean of its divisors is an integer number (27601290).

Almost surely, 2^222445816 is an apocalyptic number.

It is an amenable number.

222445816 is a deficient number, since it is larger than the sum of its proper divisors (219174824).

222445816 is a wasteful number, since it uses less digits than its factorization.

222445816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635654 (or 1635650 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 222445816 is about 14914.6175277813. The cubic root of 222445816 is about 605.9099446104.

The spelling of 222445816 in words is "two hundred twenty-two million, four hundred forty-five thousand, eight hundred sixteen".