222436378 has 16 divisors (see below), whose sum is σ = 348296904. Its totient is φ = 106436160.

The previous prime is 222436373. The next prime is 222436421. The reversal of 222436378 is 873634222.

It can be written as a sum of positive squares in 4 ways, for example, as 197205849 + 25230529 = 14043^2 + 5023^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (222436373) by changing a digit.

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, 20125 + ... + 29152.

Almost surely, 2^222436378 is an apocalyptic number.

222436378 is a deficient number, since it is larger than the sum of its proper divisors (125860526).

222436378 is a wasteful number, since it uses less digits than its factorization.

222436378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49377.

The product of its digits is 96768, while the sum is 37.

The square root of 222436378 is about 14914.3011234184. The cubic root of 222436378 is about 605.9013752442.

The spelling of 222436378 in words is "two hundred twenty-two million, four hundred thirty-six thousand, three hundred seventy-eight".