28668301 has 4 divisors (see below), whose sum is σ = 28716604. Its totient is φ = 28620000.

The previous prime is 28668293. The next prime is 28668313. The reversal of 28668301 is 10386682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10386682 = 2 ⋅5193341.

It can be written as a sum of positive squares in 2 ways, for example, as 18714276 + 9954025 = 4326^2 + 3155^2 .

It is a cyclic number.

It is not a de Polignac number, because 28668301 - 2³ = 28668293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28668331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23250 + ... + 24451.

It is an arithmetic number, because the mean of its divisors is an integer number (7179151).

Almost surely, 2^28668301 is an apocalyptic number.

It is an amenable number.

28668301 is a deficient number, since it is larger than the sum of its proper divisors (48303).

28668301 is an equidigital number, since it uses as much as digits as its factorization.

28668301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48302.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28668301 is about 5354.2787562845. The cubic root of 28668301 is about 306.0558266008.

The spelling of 28668301 in words is "twenty-eight million, six hundred sixty-eight thousand, three hundred one".