28473161 has 2 divisors, whose sum is σ = 28473162. Its totient is φ = 28473160.

The previous prime is 28473083. The next prime is 28473163. The reversal of 28473161 is 16137482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28090000 + 383161 = 5300^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 28473161 - 2¹⁴ = 28456777 is a prime.

Together with 28473163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28473163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14236580 + 14236581.

It is an arithmetic number, because the mean of its divisors is an integer number (14236581).

Almost surely, 2^28473161 is an apocalyptic number.

It is an amenable number.

28473161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28473161 is an equidigital number, since it uses as much as digits as its factorization.

28473161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The square root of 28473161 is about 5336.0248312766. The cubic root of 28473161 is about 305.3598225791.

The spelling of 28473161 in words is "twenty-eight million, four hundred seventy-three thousand, one hundred sixty-one".