224331240 has 128 divisors (see below), whose sum is σ = 795744000. Its totient is φ = 49502208.

The previous prime is 224331229. The next prime is 224331257. The reversal of 224331240 is 42133422.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19756 + ... + 28964.

It is an arithmetic number, because the mean of its divisors is an integer number (6216750).

Almost surely, 2^224331240 is an apocalyptic number.

224331240 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 224331240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (397872000).

224331240 is an abundant number, since it is smaller than the sum of its proper divisors (571412760).

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

224331240 is a wasteful number, since it uses less digits than its factorization.

224331240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259 (or 9255 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 224331240 is about 14977.6914108951. The cubic root of 224331240 is about 607.6170040010.

Adding to 224331240 its reverse (42133422), we get a palindrome (266464662).

The spelling of 224331240 in words is "two hundred twenty-four million, three hundred thirty-one thousand, two hundred forty".