20026236500 has 24 divisors (see below), whose sum is σ = 43737301608. Its totient is φ = 8010494400.

The previous prime is 20026236449. The next prime is 20026236547. The reversal of 20026236500 is 563262002.

It can be written as a sum of positive squares in 4 ways, for example, as 3062736964 + 16963499536 = 55342^2 + 130244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20026236500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20025737 + ... + 20026736.

It is an arithmetic number, because the mean of its divisors is an integer number (1822387567).

Almost surely, 2^20026236500 is an apocalyptic number.

20026236500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20026236500 is an abundant number, since it is smaller than the sum of its proper divisors (23711065108).

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

20026236500 is a wasteful number, since it uses less digits than its factorization.

20026236500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40052492 (or 40052480 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20026236500 its reverse (563262002), we get a palindrome (20589498502).

The spelling of 20026236500 in words is "twenty billion, twenty-six million, two hundred thirty-six thousand, five hundred".