224978 has 16 divisors (see below), whose sum is σ = 385560. Its totient is φ = 97536.

The previous prime is 224977. The next prime is 224993. The reversal of 224978 is 879422.

It can be written as a sum of positive squares in 4 ways, for example, as 208849 + 16129 = 457^2 + 127^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224977) 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, 188 + ... + 696.

2²²⁴⁹⁷⁸ is an apocalyptic number.

224978 is a deficient number, since it is larger than the sum of its proper divisors (160582).

224978 is a wasteful number, since it uses less digits than its factorization.

224978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 8064, while the sum is 32.

The square root of 224978 is about 474.3184584222. The cubic root of 224978 is about 60.8200375438.

The spelling of 224978 in words is "two hundred twenty-four thousand, nine hundred seventy-eight".