28244559 has 8 divisors (see below), whose sum is σ = 43039360. Its totient is φ = 16139736.

The previous prime is 28244551. The next prime is 28244563. The reversal of 28244559 is 95544282.

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

It is not a de Polignac number, because 28244559 - 2³ = 28244551 is a prime.

It is a super-2 number, since 2×28244559² = 1595510226208962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28244551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672469 + ... + 672510.

It is an arithmetic number, because the mean of its divisors is an integer number (5379920).

Almost surely, 2^28244559 is an apocalyptic number.

28244559 is a deficient number, since it is larger than the sum of its proper divisors (14794801).

28244559 is a wasteful number, since it uses less digits than its factorization.

28244559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344989.

The product of its digits is 115200, while the sum is 39.

The square root of 28244559 is about 5314.5610354948. The cubic root of 28244559 is about 304.5404132610.

The spelling of 28244559 in words is "twenty-eight million, two hundred forty-four thousand, five hundred fifty-nine".