20444432250 has 384 divisors, whose sum is σ = 60232273920. Its totient is φ = 4601520000.

The previous prime is 20444432243. The next prime is 20444432297. The reversal of 20444432250 is 5223444402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 122421667 + ... + 122421833.

It is an arithmetic number, because the mean of its divisors is an integer number (156854880).

Almost surely, 2^20444432250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444432250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30116136960).

20444432250 is an abundant number, since it is smaller than the sum of its proper divisors (39787841670).

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

20444432250 is a wasteful number, since it uses less digits than its factorization.

20444432250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 20444432250 its reverse (5223444402), we get a palindrome (25667876652).

The spelling of 20444432250 in words is "twenty billion, four hundred forty-four million, four hundred thirty-two thousand, two hundred fifty".