224022440 has 16 divisors (see below), whose sum is σ = 504050580. Its totient is φ = 89608960.

The previous prime is 224022431. The next prime is 224022443. The reversal of 224022440 is 44220422.

It can be written as a sum of positive squares in 2 ways, for example, as 216148804 + 7873636 = 14702^2 + 2806^2 .

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 (224022443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2800241 + ... + 2800320.

Almost surely, 2^224022440 is an apocalyptic number.

224022440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224022440 is an abundant number, since it is smaller than the sum of its proper divisors (280028140).

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

224022440 is a wasteful number, since it uses less digits than its factorization.

224022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600572 (or 5600568 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 224022440 is about 14967.3791961051. The cubic root of 224022440 is about 607.3380737743.

Adding to 224022440 its reverse (44220422), we get a palindrome (268242862).

It can be divided in two parts, 22402 and 2440, that added together give a palindrome (24842).

The spelling of 224022440 in words is "two hundred twenty-four million, twenty-two thousand, four hundred forty".