28560018 has 8 divisors (see below), whose sum is σ = 57120048. Its totient is φ = 9520004.

The previous prime is 28559977. The next prime is 28560019. The reversal of 28560018 is 81006582.

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

28560018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28560019) 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 3 ways as a sum of consecutive naturals, for example, 2379996 + ... + 2380007.

It is an arithmetic number, because the mean of its divisors is an integer number (7140006).

Almost surely, 2^28560018 is an apocalyptic number.

28560018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28560018 is a wasteful number, since it uses less digits than its factorization.

28560018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760008.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 28560018 is about 5344.1573704374. The cubic root of 28560018 is about 305.6700060853.

Subtracting 28560018 from its reverse (81006582), we obtain a square (52446564 = 7242²).

The spelling of 28560018 in words is "twenty-eight million, five hundred sixty thousand, eighteen".