224203540 has 96 divisors (see below), whose sum is σ = 545771520. Its totient is φ = 76560000.

The previous prime is 224203451. The next prime is 224203541. The reversal of 224203540 is 45302422.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224203541) by changing a digit.

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, 298165 + ... + 298915.

It is an arithmetic number, because the mean of its divisors is an integer number (5685120).

Almost surely, 2^224203540 is an apocalyptic number.

224203540 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 224203540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272885760).

224203540 is an abundant number, since it is smaller than the sum of its proper divisors (321567980).

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

224203540 is a wasteful number, since it uses less digits than its factorization.

224203540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 224203540 is about 14973.4277972681. The cubic root of 224203540 is about 607.5016872946.

Adding to 224203540 its reverse (45302422), we get a palindrome (269505962).

The spelling of 224203540 in words is "two hundred twenty-four million, two hundred three thousand, five hundred forty".