20022442140 has 192 divisors, whose sum is σ = 58037575680. Its totient is φ = 5155645440.

The previous prime is 20022442133. The next prime is 20022442151. The reversal of 20022442140 is 4124422002.

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 63 ways as a sum of consecutive naturals, for example, 68335834 + ... + 68336126.

It is an arithmetic number, because the mean of its divisors is an integer number (302279040).

Almost surely, 2^20022442140 is an apocalyptic number.

20022442140 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 20022442140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29018787840).

20022442140 is an abundant number, since it is smaller than the sum of its proper divisors (38015133540).

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

20022442140 is a wasteful number, since it uses less digits than its factorization.

20022442140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20022442140 its reverse (4124422002), we get a palindrome (24146864142).

The spelling of 20022442140 in words is "twenty billion, twenty-two million, four hundred forty-two thousand, one hundred forty".