28179241 has 4 divisors (see below), whose sum is σ = 28565332. Its totient is φ = 27793152.

The previous prime is 28179227. The next prime is 28179289. The reversal of 28179241 is 14297182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21949225 + 6230016 = 4685^2 + 2496^2 .

It is a cyclic number.

It is not a de Polignac number, because 28179241 - 2⁷ = 28179113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28179197 and 28179206.

It is not an unprimeable number, because it can be changed into a prime (28173241) 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, 192936 + ... + 193081.

It is an arithmetic number, because the mean of its divisors is an integer number (7141333).

Almost surely, 2^28179241 is an apocalyptic number.

It is an amenable number.

28179241 is a deficient number, since it is larger than the sum of its proper divisors (386091).

28179241 is an equidigital number, since it uses as much as digits as its factorization.

28179241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386090.

The product of its digits is 8064, while the sum is 34.

The square root of 28179241 is about 5308.4122861737. The cubic root of 28179241 is about 304.3054733277.

The spelling of 28179241 in words is "twenty-eight million, one hundred seventy-nine thousand, two hundred forty-one".