28566420002 has 8 divisors (see below), whose sum is σ = 42995875356. Its totient is φ = 14234461552.

The previous prime is 28566419993. The next prime is 28566420023. The reversal of 28566420002 is 20002466582.

It can be written as a sum of positive squares in 2 ways, for example, as 27443566921 + 1122853081 = 165661^2 + 33509^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24373493 + ... + 24374664.

Almost surely, 2^28566420002 is an apocalyptic number.

28566420002 is a deficient number, since it is larger than the sum of its proper divisors (14429455354).

28566420002 is a wasteful number, since it uses less digits than its factorization.

28566420002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48748452.

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 28566420002 its reverse (20002466582), we get a palindrome (48568886584).

The spelling of 28566420002 in words is "twenty-eight billion, five hundred sixty-six million, four hundred twenty thousand, two".