20286826820 has 48 divisors (see below), whose sum is σ = 46564246848. Its totient is φ = 7378715520.

The previous prime is 20286826757. The next prime is 20286826843. The reversal of 20286826820 is 2862868202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564866 + ... + 599705.

It is an arithmetic number, because the mean of its divisors is an integer number (970088476).

Almost surely, 2^20286826820 is an apocalyptic number.

20286826820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20286826820 is an abundant number, since it is smaller than the sum of its proper divisors (26277420028).

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

20286826820 is a wasteful number, since it uses less digits than its factorization.

20286826820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164660 (or 1164658 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 20286826820 in words is "twenty billion, two hundred eighty-six million, eight hundred twenty-six thousand, eight hundred twenty".