20322442140 has 192 divisors, whose sum is σ = 76401239040. Its totient is φ = 3897999360.

The previous prime is 20322442111. The next prime is 20322442169. The reversal of 20322442140 is 4124422302.

It is an interprime number because it is at equal distance from previous prime (20322442111) and next prime (20322442169).

It is a self number, because there is not a number n which added to its sum of digits gives 20322442140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109125 + ... + 229244.

It is an arithmetic number, because the mean of its divisors is an integer number (397923120).

Almost surely, 2^20322442140 is an apocalyptic number.

20322442140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20322442140 is an abundant number, since it is smaller than the sum of its proper divisors (56078796900).

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

20322442140 is a wasteful number, since it uses less digits than its factorization.

20322442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338412 (or 338410 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20322442140 its reverse (4124422302), we get a palindrome (24446864442).

The spelling of 20322442140 in words is "twenty billion, three hundred twenty-two million, four hundred forty-two thousand, one hundred forty".