28343318 has 16 divisors (see below), whose sum is σ = 45152640. Its totient is φ = 13297536.

The previous prime is 28343311. The next prime is 28343323. The reversal of 28343318 is 81334382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12155 + ... + 14297.

It is an arithmetic number, because the mean of its divisors is an integer number (2822040).

Almost surely, 2^28343318 is an apocalyptic number.

28343318 is a deficient number, since it is larger than the sum of its proper divisors (16809322).

28343318 is a wasteful number, since it uses less digits than its factorization.

28343318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551.

The product of its digits is 13824, while the sum is 32.

The square root of 28343318 is about 5323.8442877304. The cubic root of 28343318 is about 304.8949490405.

The spelling of 28343318 in words is "twenty-eight million, three hundred forty-three thousand, three hundred eighteen".