28183601 has 2 divisors, whose sum is σ = 28183602. Its totient is φ = 28183600.

The previous prime is 28183567. The next prime is 28183627. The reversal of 28183601 is 10638182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21298225 + 6885376 = 4615^2 + 2624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28183601 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28183301) 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, 14091800 + 14091801.

It is an arithmetic number, because the mean of its divisors is an integer number (14091801).

Almost surely, 2^28183601 is an apocalyptic number.

It is an amenable number.

28183601 is a deficient number, since it is larger than the sum of its proper divisors (1).

28183601 is an equidigital number, since it uses as much as digits as its factorization.

28183601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28183601 is about 5308.8229392211. The cubic root of 28183601 is about 304.3211669541.

The spelling of 28183601 in words is "twenty-eight million, one hundred eighty-three thousand, six hundred one".