28652161 has 2 divisors, whose sum is σ = 28652162. Its totient is φ = 28652160.

The previous prime is 28652131. The next prime is 28652179. The reversal of 28652161 is 16125682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23040000 + 5612161 = 4800^2 + 2369^2 .

It is a cyclic number.

It is not a de Polignac number, because 28652161 - 2⁷ = 28652033 is a prime.

It is not a weakly prime, because it can be changed into another prime (28652131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14326080 + 14326081.

It is an arithmetic number, because the mean of its divisors is an integer number (14326081).

Almost surely, 2^28652161 is an apocalyptic number.

It is an amenable number.

28652161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28652161 is an equidigital number, since it uses as much as digits as its factorization.

28652161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 28652161 is about 5352.7713382882. The cubic root of 28652161 is about 305.9983802440.

The spelling of 28652161 in words is "twenty-eight million, six hundred fifty-two thousand, one hundred sixty-one".