28327001 has 2 divisors, whose sum is σ = 28327002. Its totient is φ = 28327000.

The previous prime is 28326989. The next prime is 28327003. The reversal of 28327001 is 10072382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26574025 + 1752976 = 5155^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 28327001 - 2⁶ = 28326937 is a prime.

Together with 28327003, 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 (28327003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14163500 + 14163501.

It is an arithmetic number, because the mean of its divisors is an integer number (14163501).

Almost surely, 2^28327001 is an apocalyptic number.

It is an amenable number.

28327001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28327001 is an equidigital number, since it uses as much as digits as its factorization.

28327001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 28327001 is about 5322.3116218425. The cubic root of 28327001 is about 304.8364293585.

Adding to 28327001 its reverse (10072382), we get a palindrome (38399383).

The spelling of 28327001 in words is "twenty-eight million, three hundred twenty-seven thousand, one".