20305928003 has 8 divisors (see below), whose sum is σ = 20378026656. Its totient is φ = 20233873600.

The previous prime is 20305927991. The next prime is 20305928011. The reversal of 20305928003 is 30082950302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20305928003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20305928023) 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, 1104575 + ... + 1122807.

It is an arithmetic number, because the mean of its divisors is an integer number (2547253332).

Almost surely, 2^20305928003 is an apocalyptic number.

20305928003 is a deficient number, since it is larger than the sum of its proper divisors (72098653).

20305928003 is a wasteful number, since it uses less digits than its factorization.

20305928003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22125.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 20305928003 in words is "twenty billion, three hundred five million, nine hundred twenty-eight thousand, three".