28879282 has 4 divisors (see below), whose sum is σ = 43318926. Its totient is φ = 14439640.

The previous prime is 28879267. The next prime is 28879303. The reversal of 28879282 is 28297882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28297882 = 2 ⋅14148941.

It can be written as a sum of positive squares in only one way, i.e., 25310961 + 3568321 = 5031^2 + 1889^2 .

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, 7219819 + ... + 7219822.

Almost surely, 2^28879282 is an apocalyptic number.

28879282 is a deficient number, since it is larger than the sum of its proper divisors (14439644).

28879282 is a wasteful number, since it uses less digits than its factorization.

28879282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439643.

The product of its digits is 258048, while the sum is 46.

The square root of 28879282 is about 5373.9447336198. The cubic root of 28879282 is about 306.8047862917.

It can be divided in two parts, 28879 and 282, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28879282 in words is "twenty-eight million, eight hundred seventy-nine thousand, two hundred eighty-two".