20026206720 has 1600 divisors, whose sum is σ = 89836750080. Its totient is φ = 4204265472.

The previous prime is 20026206689. The next prime is 20026206769. The reversal of 20026206720 is 2760262002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 870704629 + ... + 870704651.

Almost surely, 2^20026206720 is an apocalyptic number.

20026206720 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 20026206720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44918375040).

20026206720 is an abundant number, since it is smaller than the sum of its proper divisors (69810543360).

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

20026206720 is a wasteful number, since it uses less digits than its factorization.

20026206720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 20026206720 its reverse (2760262002), we get a palindrome (22786468722).

The spelling of 20026206720 in words is "twenty billion, twenty-six million, two hundred six thousand, seven hundred twenty".