28290057241 has 4 divisors (see below), whose sum is σ = 28353064500. Its totient is φ = 28227049984.

The previous prime is 28290057193. The next prime is 28290057251. The reversal of 28290057241 is 14275009282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21713496025 + 6576561216 = 147355^2 + 81096^2 .

It is a cyclic number.

It is not a de Polignac number, because 28290057241 - 2¹⁷ = 28289926169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28290057194 and 28290057203.

It is not an unprimeable number, because it can be changed into a prime (28290057251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31502956 + ... + 31503853.

It is an arithmetic number, because the mean of its divisors is an integer number (7088266125).

Almost surely, 2^28290057241 is an apocalyptic number.

It is an amenable number.

28290057241 is a deficient number, since it is larger than the sum of its proper divisors (63007259).

28290057241 is an equidigital number, since it uses as much as digits as its factorization.

28290057241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63007258.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 28290057241 in words is "twenty-eight billion, two hundred ninety million, fifty-seven thousand, two hundred forty-one".