20602044020 has 24 divisors (see below), whose sum is σ = 43267089768. Its totient is φ = 8240284800.

The previous prime is 20602044017. The next prime is 20602044059. The reversal of 20602044020 is 2044020602.

It can be written as a sum of positive squares in 4 ways, for example, as 2544597136 + 18057446884 = 50444^2 + 134378^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20602043983 and 20602044001.

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, 467330 + ... + 509510.

It is an arithmetic number, because the mean of its divisors is an integer number (1802795407).

Almost surely, 2^20602044020 is an apocalyptic number.

20602044020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602044020 is an abundant number, since it is smaller than the sum of its proper divisors (22665045748).

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

20602044020 is a wasteful number, since it uses less digits than its factorization.

20602044020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66611 (or 66609 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20602044020 its reverse (2044020602), we get a palindrome (22646064622).

The spelling of 20602044020 in words is "twenty billion, six hundred two million, forty-four thousand, twenty".