28105441 has 8 divisors (see below), whose sum is σ = 34591424. Its totient is φ = 22237200.

The previous prime is 28105409. The next prime is 28105447. The reversal of 28105441 is 14450182.

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 28105441 - 2⁵ = 28105409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28105447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154335 + ... + 154516.

It is an arithmetic number, because the mean of its divisors is an integer number (4323928).

Almost surely, 2^28105441 is an apocalyptic number.

It is an amenable number.

28105441 is a deficient number, since it is larger than the sum of its proper divisors (6485983).

28105441 is a wasteful number, since it uses less digits than its factorization.

28105441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308871.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28105441 is about 5301.4564979824. The cubic root of 28105441 is about 304.0395875558.

The spelling of 28105441 in words is "twenty-eight million, one hundred five thousand, four hundred forty-one".