28163001 has 8 divisors (see below), whose sum is σ = 38187360. Its totient is φ = 18456992.

The previous prime is 28162991. The next prime is 28163021. The reversal of 28163001 is 10036182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28163001 - 2⁵ = 28162969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28163021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79380 + ... + 79733.

It is an arithmetic number, because the mean of its divisors is an integer number (4773420).

Almost surely, 2^28163001 is an apocalyptic number.

It is an amenable number.

28163001 is a deficient number, since it is larger than the sum of its proper divisors (10024359).

28163001 is a wasteful number, since it uses less digits than its factorization.

28163001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159175.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28163001 is about 5306.8824181434. The cubic root of 28163001 is about 304.2470039205.

Adding to 28163001 its reverse (10036182), we get a palindrome (38199183).

The spelling of 28163001 in words is "twenty-eight million, one hundred sixty-three thousand, one".