244323021420 has 144 divisors (see below), whose sum is σ = 752640846048. Its totient is φ = 64140595200.

The previous prime is 244323021419. The next prime is 244323021457. The reversal of 244323021420 is 24120323442.

244323021420 is a `hidden beast` number, since 2 + 4 + 4 + 3 + 230 + 2 + 1 + 420 = 666.

244323021420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22920732 + ... + 22931388.

It is an arithmetic number, because the mean of its divisors is an integer number (5226672542).

Almost surely, 2^244323021420 is an apocalyptic number.

244323021420 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 244323021420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376320423024).

244323021420 is an abundant number, since it is smaller than the sum of its proper divisors (508317824628).

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

244323021420 is a wasteful number, since it uses less digits than its factorization.

244323021420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12640 (or 12635 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 244323021420 its reverse (24120323442), we get a palindrome (268443344862).

The spelling of 244323021420 in words is "two hundred forty-four billion, three hundred twenty-three million, twenty-one thousand, four hundred twenty".