28085067396 has 243 divisors, whose sum is σ = 79423745583. Its totient is φ = 8365893120.

The previous prime is 28085067383. The next prime is 28085067397. The reversal of 28085067396 is 69376058082.

It is a happy number.

The square root of 28085067396 is 167586.

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 7036860996 + 21048206400 = 83886^2 + 145080^2 .

It is not an unprimeable number, because it can be changed into a prime (28085067397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 529906906 + ... + 529906958.

Almost surely, 2^28085067396 is an apocalyptic number.

28085067396 is the 167586-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28085067396

28085067396 is an abundant number, since it is smaller than the sum of its proper divisors (51338678187).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28085067396 is a wasteful number, since it uses less digits than its factorization.

28085067396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 28085067396 in words is "twenty-eight billion, eighty-five million, sixty-seven thousand, three hundred ninety-six".