28402706533 has 2 divisors, whose sum is σ = 28402706534. Its totient is φ = 28402706532.

The previous prime is 28402706477. The next prime is 28402706543. The reversal of 28402706533 is 33560720482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28352834689 + 49871844 = 168383^2 + 7062^2 .

It is a cyclic number.

It is not a de Polignac number, because 28402706533 - 2²¹ = 28400609381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28402706543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14201353266 + 14201353267.

It is an arithmetic number, because the mean of its divisors is an integer number (14201353267).

Almost surely, 2^28402706533 is an apocalyptic number.

It is an amenable number.

28402706533 is a deficient number, since it is larger than the sum of its proper divisors (1).

28402706533 is an equidigital number, since it uses as much as digits as its factorization.

28402706533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 28402706533 in words is "twenty-eight billion, four hundred two million, seven hundred six thousand, five hundred thirty-three".