223822378 has 8 divisors (see below), whose sum is σ = 361559268. Its totient is φ = 103302624.

The previous prime is 223822373. The next prime is 223822381. The reversal of 223822378 is 873228322.

It can be written as a sum of positive squares in 2 ways, for example, as 219424969 + 4397409 = 14813^2 + 2097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×223822378³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223822373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304251 + ... + 4304302.

Almost surely, 2^223822378 is an apocalyptic number.

223822378 is a deficient number, since it is larger than the sum of its proper divisors (137736890).

223822378 is a wasteful number, since it uses less digits than its factorization.

223822378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608568.

The product of its digits is 64512, while the sum is 37.

The square root of 223822378 is about 14960.6944357540. The cubic root of 223822378 is about 607.1572266271.

The spelling of 223822378 in words is "two hundred twenty-three million, eight hundred twenty-two thousand, three hundred seventy-eight".