28752105 has 16 divisors (see below), whose sum is σ = 46076544. Its totient is φ = 15310080.

The previous prime is 28752103. The next prime is 28752121. The reversal of 28752105 is 50125782.

It is not a de Polignac number, because 28752105 - 2¹ = 28752103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28752103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12225 + ... + 14385.

It is an arithmetic number, because the mean of its divisors is an integer number (2879784).

Almost surely, 2^28752105 is an apocalyptic number.

It is an amenable number.

28752105 is a deficient number, since it is larger than the sum of its proper divisors (17324439).

28752105 is a wasteful number, since it uses less digits than its factorization.

28752105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 28752105 is about 5362.0989360511. The cubic root of 28752105 is about 306.3537602042.

Adding to 28752105 its reverse (50125782), we get a palindrome (78877887).

The spelling of 28752105 in words is "twenty-eight million, seven hundred fifty-two thousand, one hundred five".