224778 has 8 divisors (see below), whose sum is σ = 449568. Its totient is φ = 74924.

The previous prime is 224771. The next prime is 224797. The reversal of 224778 is 877422.

224778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

224778 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (224771) by changing a digit.

224778 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18726 + ... + 18737.

It is an arithmetic number, because the mean of its divisors is an integer number (56196).

2²²⁴⁷⁷⁸ is an apocalyptic number.

224778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

224778 is a wasteful number, since it uses less digits than its factorization.

224778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37468.

The product of its digits is 6272, while the sum is 30.

The square root of 224778 is about 474.1075827278. The cubic root of 224778 is about 60.8020096866.

The spelling of 224778 in words is "two hundred twenty-four thousand, seven hundred seventy-eight".