28223282 has 8 divisors (see below), whose sum is σ = 42619500. Its totient is φ = 14016784.

The previous prime is 28223263. The next prime is 28223311. The reversal of 28223282 is 28232282.

It can be written as a sum of positive squares in 2 ways, for example, as 27447121 + 776161 = 5239^2 + 881^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47057 + ... + 47652.

Almost surely, 2^28223282 is an apocalyptic number.

28223282 is a deficient number, since it is larger than the sum of its proper divisors (14396218).

28223282 is a wasteful number, since it uses less digits than its factorization.

28223282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94860.

The product of its digits is 6144, while the sum is 29.

The square root of 28223282 is about 5312.5588937912. The cubic root of 28223282 is about 304.4639226097.

The spelling of 28223282 in words is "twenty-eight million, two hundred twenty-three thousand, two hundred eighty-two".