28088282 has 4 divisors (see below), whose sum is σ = 42132426. Its totient is φ = 14044140.

The previous prime is 28088237. The next prime is 28088293. The reversal of 28088282 is 28288082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28288082 = 2 ⋅14144041.

It can be written as a sum of positive squares in only one way, i.e., 24512401 + 3575881 = 4951^2 + 1891^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7022069 + ... + 7022072.

Almost surely, 2^28088282 is an apocalyptic number.

28088282 is a deficient number, since it is larger than the sum of its proper divisors (14044144).

28088282 is a wasteful number, since it uses less digits than its factorization.

28088282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14044143.

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 28088282 is about 5299.8379220501. The cubic root of 28088282 is about 303.9777006381.

The spelling of 28088282 in words is "twenty-eight million, eighty-eight thousand, two hundred eighty-two".