28338286 has 8 divisors (see below), whose sum is σ = 45007920. Its totient is φ = 13335648.

The previous prime is 28338283. The next prime is 28338293. The reversal of 28338286 is 68283382.

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 (28338281) 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, 416706 + ... + 416773.

It is an arithmetic number, because the mean of its divisors is an integer number (5625990).

Almost surely, 2^28338286 is an apocalyptic number.

28338286 is a deficient number, since it is larger than the sum of its proper divisors (16669634).

28338286 is a wasteful number, since it uses less digits than its factorization.

28338286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833498.

The product of its digits is 110592, while the sum is 40.

The square root of 28338286 is about 5323.3716759212. The cubic root of 28338286 is about 304.8769045502.

The spelling of 28338286 in words is "twenty-eight million, three hundred thirty-eight thousand, two hundred eighty-six".