20703846820 has 24 divisors (see below), whose sum is σ = 44073671544. Its totient is φ = 8168092416.

The previous prime is 20703846817. The next prime is 20703846827. The reversal of 20703846820 is 2864830702.

It can be written as a sum of positive squares in 4 ways, for example, as 2013675876 + 18690170944 = 44874^2 + 136712^2 .

It is a super-2 number, since 2×20703846820² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20703846827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7088899 + ... + 7091818.

It is an arithmetic number, because the mean of its divisors is an integer number (1836402981).

Almost surely, 2^20703846820 is an apocalyptic number.

20703846820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20703846820 is an abundant number, since it is smaller than the sum of its proper divisors (23369824724).

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

20703846820 is a wasteful number, since it uses less digits than its factorization.

20703846820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180799 (or 14180797 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20703846820 in words is "twenty billion, seven hundred three million, eight hundred forty-six thousand, eight hundred twenty".