28253282 has 4 divisors (see below), whose sum is σ = 42379926. Its totient is φ = 14126640.

The previous prime is 28253273. The next prime is 28253327. The reversal of 28253282 is 28235282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28235282 = 2 ⋅14117641.

It can be written as a sum of positive squares in only one way, i.e., 25816561 + 2436721 = 5081^2 + 1561^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7063319 + ... + 7063322.

Almost surely, 2^28253282 is an apocalyptic number.

28253282 is a deficient number, since it is larger than the sum of its proper divisors (14126644).

28253282 is a wasteful number, since it uses less digits than its factorization.

28253282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14126643.

The product of its digits is 15360, while the sum is 32.

The square root of 28253282 is about 5315.3816419896. The cubic root of 28253282 is about 304.5717612762.

The spelling of 28253282 in words is "twenty-eight million, two hundred fifty-three thousand, two hundred eighty-two".