20522303424 has 224 divisors, whose sum is σ = 69108157440. Its totient is φ = 5850123264.

The previous prime is 20522303419. The next prime is 20522303509. The reversal of 20522303424 is 42430322502.

It is a happy number.

20522303424 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 230 + 3 + 424 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6082602 + ... + 6085974.

It is an arithmetic number, because the mean of its divisors is an integer number (308518560).

Almost surely, 2^20522303424 is an apocalyptic number.

20522303424 is a gapful number since it is divisible by the number (24) 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 20522303424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34554078720).

20522303424 is an abundant number, since it is smaller than the sum of its proper divisors (48585854016).

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

20522303424 is a wasteful number, since it uses less digits than its factorization.

20522303424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904 (or 3888 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20522303424 its reverse (42430322502), we get a palindrome (62952625926).

The spelling of 20522303424 in words is "twenty billion, five hundred twenty-two million, three hundred three thousand, four hundred twenty-four".