20244240020 has 48 divisors (see below), whose sum is σ = 42965829648. Its totient is φ = 8011545600.

The previous prime is 20244240001. The next prime is 20244240041. The reversal of 20244240020 is 2004244202.

It can be written as a sum of positive squares in 8 ways, for example, as 39891856 + 20204348164 = 6316^2 + 142142^2 .

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 = 20244239974 and 20244240001.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3538202 + ... + 3543918.

It is an arithmetic number, because the mean of its divisors is an integer number (895121451).

Almost surely, 2^20244240020 is an apocalyptic number.

20244240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20244240020 is an abundant number, since it is smaller than the sum of its proper divisors (22721589628).

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

20244240020 is a wasteful number, since it uses less digits than its factorization.

20244240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7580 (or 7578 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20244240020 its reverse (2004244202), we get a palindrome (22248484222).

The spelling of 20244240020 in words is "twenty billion, two hundred forty-four million, two hundred forty thousand, twenty".