28245841 has 8 divisors (see below), whose sum is σ = 30761640. Its totient is φ = 25779072.

The previous prime is 28245829. The next prime is 28245871. The reversal of 28245841 is 14854282.

It can be written as a sum of positive squares in 4 ways, for example, as 462400 + 27783441 = 680^2 + 5271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28245841 - 2⁵ = 28245809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28245797 and 28245806.

It is not an unprimeable number, because it can be changed into a prime (28245821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11050 + ... + 13363.

It is an arithmetic number, because the mean of its divisors is an integer number (3845205).

Almost surely, 2^28245841 is an apocalyptic number.

It is an amenable number.

28245841 is a deficient number, since it is larger than the sum of its proper divisors (2515799).

28245841 is a wasteful number, since it uses less digits than its factorization.

28245841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24515.

The product of its digits is 20480, while the sum is 34.

The square root of 28245841 is about 5314.6816461572. The cubic root of 28245841 is about 304.5450208139.

The spelling of 28245841 in words is "twenty-eight million, two hundred forty-five thousand, eight hundred forty-one".