28282618 has 16 divisors (see below), whose sum is σ = 52214400. Its totient is φ = 11188656.

The previous prime is 28282613. The next prime is 28282669. The reversal of 28282618 is 81628282.

It is not an unprimeable number, because it can be changed into a prime (28282613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77518 + ... + 77881.

It is an arithmetic number, because the mean of its divisors is an integer number (3263400).

Almost surely, 2^28282618 is an apocalyptic number.

28282618 is a deficient number, since it is larger than the sum of its proper divisors (23931782).

28282618 is a wasteful number, since it uses less digits than its factorization.

28282618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155421.

The product of its digits is 24576, while the sum is 37.

The square root of 28282618 is about 5318.1404644857. The cubic root of 28282618 is about 304.6771393172.

It can be divided in two parts, 28282 and 618, that added together give a square (28900 = 170²).

The spelling of 28282618 in words is "twenty-eight million, two hundred eighty-two thousand, six hundred eighteen".