28240882 has 16 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 13728160.

The previous prime is 28240837. The next prime is 28240909. The reversal of 28240882 is 28804282.

It is a super-2 number, since 2×28240882² = 1595094832275848, which contains 22 as substring.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 38919 + ... + 39637.

It is an arithmetic number, because the mean of its divisors is an integer number (2721600).

Almost surely, 2^28240882 is an apocalyptic number.

28240882 is a deficient number, since it is larger than the sum of its proper divisors (15304718).

28240882 is a wasteful number, since it uses less digits than its factorization.

28240882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241.

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 28240882 is about 5314.2150878563. The cubic root of 28240882 is about 304.5271972206.

The spelling of 28240882 in words is "twenty-eight million, two hundred forty thousand, eight hundred eighty-two".