224305218 has 12 divisors (see below), whose sum is σ = 485994678. Its totient is φ = 74768400.

The previous prime is 224305199. The next prime is 224305247. The reversal of 224305218 is 812503422.

It can be written as a sum of positive squares in only one way, i.e., 189695529 + 34609689 = 13773^2 + 5883^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 224305191 and 224305200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6230683 + ... + 6230718.

Almost surely, 2^224305218 is an apocalyptic number.

224305218 is an abundant number, since it is smaller than the sum of its proper divisors (261689460).

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

224305218 is a wasteful number, since it uses less digits than its factorization.

224305218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12461409 (or 12461406 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 224305218 is about 14976.8226937492. The cubic root of 224305218 is about 607.5935089510.

The spelling of 224305218 in words is "two hundred twenty-four million, three hundred five thousand, two hundred eighteen".