224512440 has 64 divisors (see below), whose sum is σ = 676805760. Its totient is φ = 59579520.

The previous prime is 224512381. The next prime is 224512441. The reversal of 224512440 is 44215422.

It is a happy number.

224512440 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 224512440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224512441) 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, 20887 + ... + 29753.

It is an arithmetic number, because the mean of its divisors is an integer number (10575090).

Almost surely, 2^224512440 is an apocalyptic number.

224512440 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 224512440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338402880).

224512440 is an abundant number, since it is smaller than the sum of its proper divisors (452293320).

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

224512440 is a wasteful number, since it uses less digits than its factorization.

224512440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092 (or 9088 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 224512440 is about 14983.7391861978. The cubic root of 224512440 is about 607.7805576379.

Adding to 224512440 its reverse (44215422), we get a palindrome (268727862).

The spelling of 224512440 in words is "two hundred twenty-four million, five hundred twelve thousand, four hundred forty".