28853786 has 8 divisors (see below), whose sum is σ = 46610004. Its totient is φ = 13317120.

The previous prime is 28853767. The next prime is 28853789. The reversal of 28853786 is 68735882.

It can be written as a sum of positive squares in 2 ways, for example, as 20839225 + 8014561 = 4565^2 + 2831^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28853786.

It is not an unprimeable number, because it can be changed into a prime (28853789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554855 + ... + 554906.

Almost surely, 2^28853786 is an apocalyptic number.

28853786 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28853786 is a deficient number, since it is larger than the sum of its proper divisors (17756218).

28853786 is a wasteful number, since it uses less digits than its factorization.

28853786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109776.

The product of its digits is 645120, while the sum is 47.

The square root of 28853786 is about 5371.5720231604. The cubic root of 28853786 is about 306.7144724359.

The spelling of 28853786 in words is "twenty-eight million, eight hundred fifty-three thousand, seven hundred eighty-six".