224213440 has 56 divisors (see below), whose sum is σ = 582454512. Its totient is φ = 81530880.

The previous prime is 224213411. The next prime is 224213449. The reversal of 224213440 is 44312422.

It is a happy number.

224213440 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 (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224213449) 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, 28329 + ... + 35368.

Almost surely, 2^224213440 is an apocalyptic number.

224213440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224213440 is an abundant number, since it is smaller than the sum of its proper divisors (358241072).

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

224213440 is a wasteful number, since it uses less digits than its factorization.

224213440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63725 (or 63715 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 224213440 is about 14973.7583792447. The cubic root of 224213440 is about 607.5106288396.

Adding to 224213440 its reverse (44312422), we get a palindrome (268525862).

The spelling of 224213440 in words is "two hundred twenty-four million, two hundred thirteen thousand, four hundred forty".