224321240 has 64 divisors (see below), whose sum is σ = 592976160. Its totient is φ = 75294720.

The previous prime is 224321191. The next prime is 224321249. The reversal of 224321240 is 42123422.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224321249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13889 + ... + 25328.

Almost surely, 2^224321240 is an apocalyptic number.

224321240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224321240 is an abundant number, since it is smaller than the sum of its proper divisors (368654920).

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

224321240 is a wasteful number, since it uses less digits than its factorization.

224321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39252 (or 39248 counting only the distinct ones).

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

The square root of 224321240 is about 14977.3575773566. The cubic root of 224321240 is about 607.6079752981.

Adding to 224321240 its reverse (42123422), we get a palindrome (266444662).

The spelling of 224321240 in words is "two hundred twenty-four million, three hundred twenty-one thousand, two hundred forty".