28374161 has 2 divisors, whose sum is σ = 28374162. Its totient is φ = 28374160.

The previous prime is 28374113. The next prime is 28374167. The reversal of 28374161 is 16147382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 10523536 = 4225^2 + 3244^2 .

It is a cyclic number.

It is not a de Polignac number, because 28374161 - 2⁶ = 28374097 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28374167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187080 + 14187081.

It is an arithmetic number, because the mean of its divisors is an integer number (14187081).

Almost surely, 2^28374161 is an apocalyptic number.

It is an amenable number.

28374161 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374161 is an equidigital number, since it uses as much as digits as its factorization.

28374161 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 28374161 is about 5326.7401851414. The cubic root of 28374161 is about 305.0055037975.

The spelling of 28374161 in words is "twenty-eight million, three hundred seventy-four thousand, one hundred sixty-one".