20302403660 has 144 divisors (see below), whose sum is σ = 54571019328. Its totient is φ = 6208350720.

The previous prime is 20302403651. The next prime is 20302403701. The reversal of 20302403660 is 6630420302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 886514 + ... + 909126.

It is an arithmetic number, because the mean of its divisors is an integer number (378965412).

Almost surely, 2^20302403660 is an apocalyptic number.

20302403660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20302403660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27285509664).

20302403660 is an abundant number, since it is smaller than the sum of its proper divisors (34268615668).

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

20302403660 is a wasteful number, since it uses less digits than its factorization.

20302403660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22704 (or 22691 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20302403660 its reverse (6630420302), we get a palindrome (26932823962).

The spelling of 20302403660 in words is "twenty billion, three hundred two million, four hundred three thousand, six hundred sixty".