28368301 has 4 divisors (see below), whose sum is σ = 30550492. Its totient is φ = 26186112.

The previous prime is 28368299. The next prime is 28368337. The reversal of 28368301 is 10386382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10386382 = 2 ⋅5193191.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 24000201 = 2090^2 + 4899^2 .

It is a cyclic number.

It is not a de Polignac number, because 28368301 - 2¹ = 28368299 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 (28368341) 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, 1091076 + ... + 1091101.

It is an arithmetic number, because the mean of its divisors is an integer number (7637623).

Almost surely, 2^28368301 is an apocalyptic number.

It is an amenable number.

28368301 is a deficient number, since it is larger than the sum of its proper divisors (2182191).

28368301 is a wasteful number, since it uses less digits than its factorization.

28368301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182190.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28368301 is about 5326.1901017519. The cubic root of 28368301 is about 304.9845051700.

The spelling of 28368301 in words is "twenty-eight million, three hundred sixty-eight thousand, three hundred one".