28528415101 has 2 divisors, whose sum is σ = 28528415102. Its totient is φ = 28528415100.

The previous prime is 28528415063. The next prime is 28528415143. The reversal of 28528415101 is 10151482582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26170827076 + 2357588025 = 161774^2 + 48555^2 .

It is a cyclic number.

It is not a de Polignac number, because 28528415101 - 2⁹ = 28528414589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28528415501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14264207550 + 14264207551.

It is an arithmetic number, because the mean of its divisors is an integer number (14264207551).

Almost surely, 2^28528415101 is an apocalyptic number.

It is an amenable number.

28528415101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28528415101 is an equidigital number, since it uses as much as digits as its factorization.

28528415101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25600, while the sum is 37.

Adding to 28528415101 its reverse (10151482582), we get a palindrome (38679897683).

The spelling of 28528415101 in words is "twenty-eight billion, five hundred twenty-eight million, four hundred fifteen thousand, one hundred one".