28341458081 has 12 divisors (see below), whose sum is σ = 30127836732. Its totient is φ = 26655560448.

The previous prime is 28341458077. The next prime is 28341458083. The reversal of 28341458081 is 18085414382.

It can be written as a sum of positive squares in 6 ways, for example, as 16144243600 + 12197214481 = 127060^2 + 110441^2 .

It is not a de Polignac number, because 28341458081 - 2² = 28341458077 is a prime.

It is a super-2 number, since 2×28341458081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28341458083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386171 + ... + 453663.

It is an arithmetic number, because the mean of its divisors is an integer number (2510653061).

Almost surely, 2^28341458081 is an apocalyptic number.

It is an amenable number.

28341458081 is a deficient number, since it is larger than the sum of its proper divisors (1786378651).

28341458081 is a wasteful number, since it uses less digits than its factorization.

28341458081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68980 (or 68963 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The spelling of 28341458081 in words is "twenty-eight billion, three hundred forty-one million, four hundred fifty-eight thousand, eighty-one".