28560312 has 48 divisors (see below), whose sum is σ = 84385080. Its totient is φ = 8654400.

The previous prime is 28560251. The next prime is 28560353. The reversal of 28560312 is 21306582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17239 + ... + 18822.

Almost surely, 2^28560312 is an apocalyptic number.

28560312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28560312 is an abundant number, since it is smaller than the sum of its proper divisors (55824768).

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

28560312 is a wasteful number, since it uses less digits than its factorization.

28560312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36084 (or 36077 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28560312 is about 5344.1848770416. The cubic root of 28560312 is about 305.6710549488.

Adding to 28560312 its reverse (21306582), we get a palindrome (49866894).

The spelling of 28560312 in words is "twenty-eight million, five hundred sixty thousand, three hundred twelve".