28238341 has 4 divisors (see below), whose sum is σ = 28372384. Its totient is φ = 28104300.

The previous prime is 28238317. The next prime is 28238387. The reversal of 28238341 is 14383282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14383282 = 2 ⋅7191641.

It is a cyclic number.

It is not a de Polignac number, because 28238341 - 2⁹ = 28237829 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 (28238741) 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, 66705 + ... + 67126.

It is an arithmetic number, because the mean of its divisors is an integer number (7093096).

Almost surely, 2^28238341 is an apocalyptic number.

It is an amenable number.

28238341 is a deficient number, since it is larger than the sum of its proper divisors (134043).

28238341 is a wasteful number, since it uses less digits than its factorization.

28238341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134042.

The product of its digits is 9216, while the sum is 31.

The square root of 28238341 is about 5313.9760067204. The cubic root of 28238341 is about 304.5180635727.

The spelling of 28238341 in words is "twenty-eight million, two hundred thirty-eight thousand, three hundred forty-one".