28284518 has 8 divisors (see below), whose sum is σ = 42449520. Its totient is φ = 14134680.

The previous prime is 28284511. The next prime is 28284523. The reversal of 28284518 is 81548282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28284511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4508 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (5306190).

Almost surely, 2^28284518 is an apocalyptic number.

28284518 is a deficient number, since it is larger than the sum of its proper divisors (14165002).

28284518 is a wasteful number, since it uses less digits than its factorization.

28284518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7582.

The product of its digits is 40960, while the sum is 38.

The square root of 28284518 is about 5318.3190953533. The cubic root of 28284518 is about 304.6839618068.

The spelling of 28284518 in words is "twenty-eight million, two hundred eighty-four thousand, five hundred eighteen".