20028783002 has 16 divisors (see below), whose sum is σ = 31817658600. Its totient is φ = 9423164928.

The previous prime is 20028782959. The next prime is 20028783013. The reversal of 20028783002 is 20038782002.

It can be written as a sum of positive squares in 4 ways, for example, as 17119367281 + 2909415721 = 130841^2 + 53939^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20028783002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89918 + ... + 219414.

Almost surely, 2^20028783002 is an apocalyptic number.

20028783002 is a deficient number, since it is larger than the sum of its proper divisors (11788875598).

20028783002 is a wasteful number, since it uses less digits than its factorization.

20028783002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134065.

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 20028783002 in words is "twenty billion, twenty-eight million, seven hundred eighty-three thousand, two".