224312240 has 20 divisors (see below), whose sum is σ = 521526144. Its totient is φ = 89724864.

The previous prime is 224312227. The next prime is 224312243. The reversal of 224312240 is 42213422.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (224312243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401872 + ... + 1402031.

Almost surely, 2^224312240 is an apocalyptic number.

224312240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224312240 is an abundant number, since it is smaller than the sum of its proper divisors (297213904).

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

224312240 is a wasteful number, since it uses less digits than its factorization.

224312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803916 (or 2803910 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 224312240 is about 14977.0571208098. The cubic root of 224312240 is about 607.5998492361.

Adding to 224312240 its reverse (42213422), we get a palindrome (266525662).

The spelling of 224312240 in words is "two hundred twenty-four million, three hundred twelve thousand, two hundred forty".