28752106 has 8 divisors (see below), whose sum is σ = 43835364. Its totient is φ = 14140320.

The previous prime is 28752103. The next prime is 28752121. The reversal of 28752106 is 60125782.

It can be written as a sum of positive squares in 2 ways, for example, as 26163225 + 2588881 = 5115^2 + 1609^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 117715 + ... + 117958.

Almost surely, 2^28752106 is an apocalyptic number.

28752106 is a deficient number, since it is larger than the sum of its proper divisors (15083258).

28752106 is a wasteful number, since it uses less digits than its factorization.

28752106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235736.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28752106 is about 5362.0990292981. The cubic root of 28752106 is about 306.3537637559.

Adding to 28752106 its reverse (60125782), we get a palindrome (88877888).

The spelling of 28752106 in words is "twenty-eight million, seven hundred fifty-two thousand, one hundred six".