28279258 has 32 divisors (see below), whose sum is σ = 52295040. Its totient is φ = 11197440.

The previous prime is 28279247. The next prime is 28279261. The reversal of 28279258 is 85297282.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610 + ... + 12202.

It is an arithmetic number, because the mean of its divisors is an integer number (1634220).

Almost surely, 2^28279258 is an apocalyptic number.

28279258 is a deficient number, since it is larger than the sum of its proper divisors (24015782).

28279258 is a wasteful number, since it uses less digits than its factorization.

28279258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662.

The product of its digits is 161280, while the sum is 43.

The square root of 28279258 is about 5317.8245552105. The cubic root of 28279258 is about 304.6650735350.

The spelling of 28279258 in words is "twenty-eight million, two hundred seventy-nine thousand, two hundred fifty-eight".