20084051920 has 40 divisors (see below), whose sum is σ = 46706329800. Its totient is φ = 8031744000.

The previous prime is 20084051917. The next prime is 20084051921. The reversal of 20084051920 is 2915048002.

It can be written as a sum of positive squares in 4 ways, for example, as 4467050896 + 15617001024 = 66836^2 + 124968^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084051921) 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 7 ways as a sum of consecutive naturals, for example, 344920 + ... + 398920.

It is an arithmetic number, because the mean of its divisors is an integer number (1167658245).

Almost surely, 2^20084051920 is an apocalyptic number.

20084051920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20084051920 is an abundant number, since it is smaller than the sum of its proper divisors (26622277880).

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

20084051920 is a wasteful number, since it uses less digits than its factorization.

20084051920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58663 (or 58657 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 20084051920 its reverse (2915048002), we get a palindrome (22999099922).

The spelling of 20084051920 in words is "twenty billion, eighty-four million, fifty-one thousand, nine hundred twenty".