28855843 has 2 divisors, whose sum is σ = 28855844. Its totient is φ = 28855842.

The previous prime is 28855837. The next prime is 28855861. The reversal of 28855843 is 34855882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28855843 - 2⁵ = 28855811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28855843.

It is not a weakly prime, because it can be changed into another prime (28855873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14427921 + 14427922.

It is an arithmetic number, because the mean of its divisors is an integer number (14427922).

Almost surely, 2^28855843 is an apocalyptic number.

28855843 is a deficient number, since it is larger than the sum of its proper divisors (1).

28855843 is an equidigital number, since it uses as much as digits as its factorization.

28855843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 307200, while the sum is 43.

The square root of 28855843 is about 5371.7634906984. The cubic root of 28855843 is about 306.7217608692.

The spelling of 28855843 in words is "twenty-eight million, eight hundred fifty-five thousand, eight hundred forty-three".