28350518 has 12 divisors (see below), whose sum is σ = 49468932. Its totient is φ = 12150180.

The previous prime is 28350433. The next prime is 28350521. The reversal of 28350518 is 81505382.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 144548 + ... + 144743.

It is an arithmetic number, because the mean of its divisors is an integer number (4122411).

Almost surely, 2^28350518 is an apocalyptic number.

28350518 is a deficient number, since it is larger than the sum of its proper divisors (21118414).

28350518 is a wasteful number, since it uses less digits than its factorization.

28350518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289307 (or 289300 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 28350518 is about 5324.5204478901. The cubic root of 28350518 is about 304.9207641524.

The spelling of 28350518 in words is "twenty-eight million, three hundred fifty thousand, five hundred eighteen".