224310021440 has 112 divisors (see below), whose sum is σ = 545036532480. Its totient is φ = 87910717440.

The previous prime is 224310021373. The next prime is 224310021449. The reversal of 224310021440 is 44120013422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224310021449) 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, 3277814 + ... + 3345546.

Almost surely, 2^224310021440 is an apocalyptic number.

224310021440 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 224310021440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272518266240).

224310021440 is an abundant number, since it is smaller than the sum of its proper divisors (320726511040).

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

224310021440 is a wasteful number, since it uses less digits than its factorization.

224310021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67960 (or 67950 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 224310021440 its reverse (44120013422), we get a palindrome (268430034862).

The spelling of 224310021440 in words is "two hundred twenty-four billion, three hundred ten million, twenty-one thousand, four hundred forty".