28610201 has 8 divisors (see below), whose sum is σ = 30394440. Its totient is φ = 26837248.

The previous prime is 28610189. The next prime is 28610203. The reversal of 28610201 is 10201682.

It can be written as a sum of positive squares in 4 ways, for example, as 265225 + 28344976 = 515^2 + 5324^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28610201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28610203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2735 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (3799305).

Almost surely, 2^28610201 is an apocalyptic number.

It is an amenable number.

28610201 is a deficient number, since it is larger than the sum of its proper divisors (1784239).

28610201 is a wasteful number, since it uses less digits than its factorization.

28610201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 28610201 is about 5348.8504372435. The cubic root of 28610201 is about 305.8489329372.

Adding to 28610201 its reverse (10201682), we get a palindrome (38811883).

The spelling of 28610201 in words is "twenty-eight million, six hundred ten thousand, two hundred one".