28622304085 has 4 divisors (see below), whose sum is σ = 34346764908. Its totient is φ = 22897843264.

The previous prime is 28622304079. The next prime is 28622304089. The reversal of 28622304085 is 58040322682.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58040322682 = 2 ⋅29020161341.

It can be written as a sum of positive squares in 2 ways, for example, as 9113757156 + 19508546929 = 95466^2 + 139673^2 .

It is a cyclic number.

It is not a de Polignac number, because 28622304085 - 2²¹ = 28620206933 is a prime.

It is a super-2 number, since 2×28622304085² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28622304089) by changing a digit.

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, 2862230404 + ... + 2862230413.

It is an arithmetic number, because the mean of its divisors is an integer number (8586691227).

Almost surely, 2^28622304085 is an apocalyptic number.

It is an amenable number.

28622304085 is a deficient number, since it is larger than the sum of its proper divisors (5724460823).

28622304085 is an equidigital number, since it uses as much as digits as its factorization.

28622304085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724460822.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 28622304085 in words is "twenty-eight billion, six hundred twenty-two million, three hundred four thousand, eighty-five".