28094559 has 16 divisors (see below), whose sum is σ = 39751680. Its totient is φ = 17599680.

The previous prime is 28094551. The next prime is 28094603. The reversal of 28094559 is 95549082.

It is not a de Polignac number, because 28094559 - 2³ = 28094551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28094559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28094551) 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, 5299 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (2484480).

Almost surely, 2^28094559 is an apocalyptic number.

28094559 is a deficient number, since it is larger than the sum of its proper divisors (11657121).

28094559 is a wasteful number, since it uses less digits than its factorization.

28094559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 28094559 is about 5300.4300768900. The cubic root of 28094559 is about 304.0003426531. Note that the first 3 decimals are identical.

The spelling of 28094559 in words is "twenty-eight million, ninety-four thousand, five hundred fifty-nine".