28207305213026 has 16 divisors (see below), whose sum is σ = 42578460992088. Its totient is φ = 14014650777600.

The previous prime is 28207305213019. The next prime is 28207305213037. The reversal of 28207305213026 is 62031250370282.

It is a Cunningham number, because it is equal to 5311055²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6834297834001 + 21373007379025 = 2614249^2 + 4623095^2 .

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 7 ways as a sum of consecutive naturals, for example, 41133215 + ... + 41813346.

Almost surely, 2^{28207305213026} is an apocalyptic number.

28207305213026 is a deficient number, since it is larger than the sum of its proper divisors (14371155779062).

28207305213026 is a wasteful number, since it uses less digits than its factorization.

28207305213026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82947637.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 28207305213026 in words is "twenty-eight trillion, two hundred seven billion, three hundred five million, two hundred thirteen thousand, twenty-six".