20626236306 has 128 divisors (see below), whose sum is σ = 52545024000. Its totient is φ = 5941278720.

The previous prime is 20626236251. The next prime is 20626236311. The reversal of 20626236306 is 60363262602.

20626236306 is a `hidden beast` number, since 2 + 0 + 626 + 23 + 6 + 3 + 0 + 6 = 666.

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, 2274870 + ... + 2283918.

It is an arithmetic number, because the mean of its divisors is an integer number (410508000).

Almost surely, 2^20626236306 is an apocalyptic number.

20626236306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20626236306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26272512000).

20626236306 is an abundant number, since it is smaller than the sum of its proper divisors (31918787694).

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

20626236306 is a wasteful number, since it uses less digits than its factorization.

20626236306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281 (or 9275 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

Adding to 20626236306 its reverse (60363262602), we get a palindrome (80989498908).

The spelling of 20626236306 in words is "twenty billion, six hundred twenty-six million, two hundred thirty-six thousand, three hundred six".