20303241520 has 40 divisors (see below), whose sum is σ = 47211063120. Its totient is φ = 8120259840.

The previous prime is 20303241479. The next prime is 20303241523. The reversal of 20303241520 is 2514230302.

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

It is a junction number, because it is equal to n+sod(n) for n = 20303241491 and 20303241500.

It is not an unprimeable number, because it can be changed into a prime (20303241523) 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, 1051150 + ... + 1070290.

It is an arithmetic number, because the mean of its divisors is an integer number (1180276578).

Almost surely, 2^20303241520 is an apocalyptic number.

20303241520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303241520 is an abundant number, since it is smaller than the sum of its proper divisors (26907821600).

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

20303241520 is a wasteful number, since it uses less digits than its factorization.

20303241520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32413 (or 32407 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20303241520 its reverse (2514230302), we get a palindrome (22817471822).

The spelling of 20303241520 in words is "twenty billion, three hundred three million, two hundred forty-one thousand, five hundred twenty".