28358018 has 32 divisors (see below), whose sum is σ = 47341056. Its totient is φ = 12659328.

The previous prime is 28358017. The next prime is 28358053. The reversal of 28358018 is 81085382.

It is not an unprimeable number, because it can be changed into a prime (28358017) 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 15 ways as a sum of consecutive naturals, for example, 127055 + ... + 127277.

It is an arithmetic number, because the mean of its divisors is an integer number (1479408).

Almost surely, 2^28358018 is an apocalyptic number.

28358018 is a deficient number, since it is larger than the sum of its proper divisors (18983038).

28358018 is a wasteful number, since it uses less digits than its factorization.

28358018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 28358018 is about 5325.2246900952. The cubic root of 28358018 is about 304.9476502467.

The spelling of 28358018 in words is "twenty-eight million, three hundred fifty-eight thousand, eighteen".