28242841 has 4 divisors (see below), whose sum is σ = 30810384. Its totient is φ = 25675300.

The previous prime is 28242791. The next prime is 28242859. The reversal of 28242841 is 14824282.

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.

It is a cyclic number.

It is not a de Polignac number, because 28242841 - 2⁷ = 28242713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28242871) 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, 1283755 + ... + 1283776.

It is an arithmetic number, because the mean of its divisors is an integer number (7702596).

Almost surely, 2^28242841 is an apocalyptic number.

It is an amenable number.

28242841 is a deficient number, since it is larger than the sum of its proper divisors (2567543).

28242841 is a wasteful number, since it uses less digits than its factorization.

28242841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567542.

The product of its digits is 8192, while the sum is 31.

The square root of 28242841 is about 5314.3994016257. The cubic root of 28242841 is about 304.5342384901.

It can be divided in two parts, 2824 and 2841, that added together give a palindrome (5665).

The spelling of 28242841 in words is "twenty-eight million, two hundred forty-two thousand, eight hundred forty-one".