28301282 has 4 divisors (see below), whose sum is σ = 42451926. Its totient is φ = 14150640.

The previous prime is 28301281. The next prime is 28301309. The reversal of 28301282 is 28210382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28210382 = 2 ⋅14105191.

It can be written as a sum of positive squares in only one way, i.e., 27258841 + 1042441 = 5221^2 + 1021^2 .

It is not an unprimeable number, because it can be changed into a prime (28301281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7075319 + ... + 7075322.

Almost surely, 2^28301282 is an apocalyptic number.

28301282 is a deficient number, since it is larger than the sum of its proper divisors (14150644).

28301282 is a wasteful number, since it uses less digits than its factorization.

28301282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14150643.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28301282 is about 5319.8949237743. The cubic root of 28301282 is about 304.7441444736.

The spelling of 28301282 in words is "twenty-eight million, three hundred one thousand, two hundred eighty-two".