28352258 has 16 divisors (see below), whose sum is σ = 46678464. Its totient is φ = 12808560.

The previous prime is 28352257. The next prime is 28352263. The reversal of 28352258 is 85225382.

It is not an unprimeable number, because it can be changed into a prime (28352257) 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 7 ways as a sum of consecutive naturals, for example, 185 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (2917404).

Almost surely, 2^28352258 is an apocalyptic number.

28352258 is a deficient number, since it is larger than the sum of its proper divisors (18326206).

28352258 is a wasteful number, since it uses less digits than its factorization.

28352258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897.

The product of its digits is 38400, while the sum is 35.

The square root of 28352258 is about 5324.6838403796. The cubic root of 28352258 is about 304.9270021487.

The spelling of 28352258 in words is "twenty-eight million, three hundred fifty-two thousand, two hundred fifty-eight".