28558336 has 33 divisors (see below), whose sum is σ = 57432679. Its totient is φ = 14193664.

The previous prime is 28558333. The next prime is 28558337. The reversal of 28558336 is 63385582.

It is a happy number.

The square root of 28558336 is 5344.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28558331) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 170925 + ... + 171091.

Almost surely, 2^28558336 is an apocalyptic number.

28558336 is the 5344-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28558336

28558336 is an abundant number, since it is smaller than the sum of its proper divisors (28874343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28558336 is an frugal number, since it uses more digits than its factorization.

28558336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 169 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The cubic root of 28558336 is about 305.6640053066.

The spelling of 28558336 in words is "twenty-eight million, five hundred fifty-eight thousand, three hundred thirty-six".