28323258 has 32 divisors (see below), whose sum is σ = 62591616. Its totient is φ = 8498688.

The previous prime is 28323209. The next prime is 28323277. The reversal of 28323258 is 85232382.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3691 + ... + 8382.

It is an arithmetic number, because the mean of its divisors is an integer number (1955988).

Almost surely, 2^28323258 is an apocalyptic number.

28323258 is an abundant number, since it is smaller than the sum of its proper divisors (34268358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28323258 is a wasteful number, since it uses less digits than its factorization.

28323258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12118.

The product of its digits is 23040, while the sum is 33.

The square root of 28323258 is about 5321.9599773016. The cubic root of 28323258 is about 304.8230022045.

The spelling of 28323258 in words is "twenty-eight million, three hundred twenty-three thousand, two hundred fifty-eight".