224203440 has 160 divisors (see below), whose sum is σ = 718811136. Its totient is φ = 57784320.

The previous prime is 224203423. The next prime is 224203451. The reversal of 224203440 is 44302422.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1173745 + ... + 1173935.

Almost surely, 2^224203440 is an apocalyptic number.

224203440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359405568).

224203440 is an abundant number, since it is smaller than the sum of its proper divisors (494607696).

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

224203440 is a wasteful number, since it uses less digits than its factorization.

224203440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 224203440 is about 14973.4244580189. The cubic root of 224203440 is about 607.5015969746.

Adding to 224203440 its reverse (44302422), we get a palindrome (268505862).

The spelling of 224203440 in words is "two hundred twenty-four million, two hundred three thousand, four hundred forty".