28556841 has 16 divisors (see below), whose sum is σ = 38972160. Its totient is φ = 18595200.

The previous prime is 28556831. The next prime is 28556873. The reversal of 28556841 is 14865582.

It is not a de Polignac number, because 28556841 - 2⁵ = 28556809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28556841.

It is not an unprimeable number, because it can be changed into a prime (28556831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23341 + ... + 24533.

It is an arithmetic number, because the mean of its divisors is an integer number (2435760).

Almost surely, 2^28556841 is an apocalyptic number.

It is an amenable number.

28556841 is a deficient number, since it is larger than the sum of its proper divisors (10415319).

28556841 is a wasteful number, since it uses less digits than its factorization.

28556841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376.

The product of its digits is 76800, while the sum is 39.

The square root of 28556841 is about 5343.8601216723. The cubic root of 28556841 is about 305.6586714797.

The spelling of 28556841 in words is "twenty-eight million, five hundred fifty-six thousand, eight hundred forty-one".