224242440 has 32 divisors (see below), whose sum is σ = 672727680. Its totient is φ = 59797952.

The previous prime is 224242397. The next prime is 224242441. The reversal of 224242440 is 44242422.

224242440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 224242440.

It is not an unprimeable number, because it can be changed into a prime (224242441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934224 + ... + 934463.

It is an arithmetic number, because the mean of its divisors is an integer number (21022740).

Almost surely, 2^224242440 is an apocalyptic number.

224242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224242440 is an abundant number, since it is smaller than the sum of its proper divisors (448485240).

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

224242440 is a wasteful number, since it uses less digits than its factorization.

224242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868701 (or 1868697 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 224242440 is about 14974.7267086915. The cubic root of 224242440 is about 607.5368197298.

Adding to 224242440 its reverse (44242422), we get a palindrome (268484862).

The spelling of 224242440 in words is "two hundred twenty-four million, two hundred forty-two thousand, four hundred forty".