224121340 has 24 divisors (see below), whose sum is σ = 495426960. Its totient is φ = 84930048.

The previous prime is 224121329. The next prime is 224121343. The reversal of 224121340 is 43121422.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224121343) 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, 294517 + ... + 295276.

It is an arithmetic number, because the mean of its divisors is an integer number (20642790).

Almost surely, 2^224121340 is an apocalyptic number.

224121340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224121340 is an abundant number, since it is smaller than the sum of its proper divisors (271305620).

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

224121340 is a wasteful number, since it uses less digits than its factorization.

224121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589821 (or 589819 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 224121340 is about 14970.6826831645. The cubic root of 224121340 is about 607.4274352069.

Adding to 224121340 its reverse (43121422), we get a palindrome (267242762).

The spelling of 224121340 in words is "two hundred twenty-four million, one hundred twenty-one thousand, three hundred forty".