20026697900 has 54 divisors (see below), whose sum is σ = 47767841100. Its totient is φ = 7282431200.

The previous prime is 20026697861. The next prime is 20026697909. The reversal of 20026697900 is 979662002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20026697909) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 815450 + ... + 839649.

It is an arithmetic number, because the mean of its divisors is an integer number (884589650).

Almost surely, 2^20026697900 is an apocalyptic number.

20026697900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20026697900 is an abundant number, since it is smaller than the sum of its proper divisors (27741143200).

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

20026697900 is a wasteful number, since it uses less digits than its factorization.

20026697900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655135 (or 1655117 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 20026697900 in words is "twenty billion, twenty-six million, six hundred ninety-seven thousand, nine hundred".