28256541 has 8 divisors (see below), whose sum is σ = 38477184. Its totient is φ = 18436800.

The previous prime is 28256507. The next prime is 28256549. The reversal of 28256541 is 14565282.

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

It is not a de Polignac number, because 28256541 - 2⁷ = 28256413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28256549) 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, 100060 + ... + 100341.

It is an arithmetic number, because the mean of its divisors is an integer number (4809648).

Almost surely, 2^28256541 is an apocalyptic number.

It is an amenable number.

28256541 is a deficient number, since it is larger than the sum of its proper divisors (10220643).

28256541 is a wasteful number, since it uses less digits than its factorization.

28256541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200451.

The product of its digits is 19200, while the sum is 33.

The square root of 28256541 is about 5315.6881962734. The cubic root of 28256541 is about 304.5834715524.

The spelling of 28256541 in words is "twenty-eight million, two hundred fifty-six thousand, five hundred forty-one".