10305239920 has 20 divisors (see below), whose sum is σ = 23959683000. Its totient is φ = 4122095936.

The previous prime is 10305239909. The next prime is 10305239933. The reversal of 10305239920 is 2993250301.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64407670 + ... + 64407829.

It is an arithmetic number, because the mean of its divisors is an integer number (1197984150).

Almost surely, 2^10305239920 is an apocalyptic number.

10305239920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10305239920 is an abundant number, since it is smaller than the sum of its proper divisors (13654443080).

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

10305239920 is a wasteful number, since it uses less digits than its factorization.

10305239920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128815512 (or 128815506 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 10305239920 in words is "ten billion, three hundred five million, two hundred thirty-nine thousand, nine hundred twenty".