28288546 has 16 divisors (see below), whose sum is σ = 49851648. Its totient is φ = 11869200.

The previous prime is 28288541. The next prime is 28288571. The reversal of 28288546 is 64588282.

It is not an unprimeable number, because it can be changed into a prime (28288541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49170 + ... + 49741.

It is an arithmetic number, because the mean of its divisors is an integer number (3115728).

Almost surely, 2^28288546 is an apocalyptic number.

28288546 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28288546 is a deficient number, since it is larger than the sum of its proper divisors (21563102).

28288546 is a wasteful number, since it uses less digits than its factorization.

28288546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98937.

The product of its digits is 245760, while the sum is 43.

The square root of 28288546 is about 5318.6977729516. The cubic root of 28288546 is about 304.6984244744.

The spelling of 28288546 in words is "twenty-eight million, two hundred eighty-eight thousand, five hundred forty-six".