28259360722 has 24 divisors (see below), whose sum is σ = 43884234324. Its totient is φ = 13647267072.

The previous prime is 28259360719. The next prime is 28259360737. The reversal of 28259360722 is 22706395282.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 26353950921 + 1905409801 = 162339^2 + 43651^2 .

It is a super-2 number, since 2×28259360722² (a number of 22 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 337438 + ... + 412774.

Almost surely, 2^28259360722 is an apocalyptic number.

28259360722 is a deficient number, since it is larger than the sum of its proper divisors (15624873602).

28259360722 is a wasteful number, since it uses less digits than its factorization.

28259360722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75550 (or 75513 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 28259360722 in words is "twenty-eight billion, two hundred fifty-nine million, three hundred sixty thousand, seven hundred twenty-two".