28207422056356 has 27 divisors (see below), whose sum is σ = 49495041287139. Its totient is φ = 14066082125568.

The previous prime is 28207422056351. The next prime is 28207422056417. The reversal of 28207422056356 is 65365022470282.

The square root of 28207422056356 is 5311066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7462895148900 + 20744526907456 = 2731830^2 + 4554616^2 .

It is a super-3 number, since 3×28207422056356³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28207422056351) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4216983060 + ... + 4216989748.

Almost surely, 2^{28207422056356} is an apocalyptic number.

28207422056356 is the 5311066-th square number.

It is an amenable number.

28207422056356 is a deficient number, since it is larger than the sum of its proper divisors (21287619230783).

28207422056356 is an frugal number, since it uses more digits than its factorization.

28207422056356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14176 (or 7088 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 52.

The spelling of 28207422056356 in words is "twenty-eight trillion, two hundred seven billion, four hundred twenty-two million, fifty-six thousand, three hundred fifty-six".