28280714 has 32 divisors (see below), whose sum is σ = 53136000. Its totient is φ = 10967040.

The previous prime is 28280701. The next prime is 28280717. The reversal of 28280714 is 41708282.

It is not an unprimeable number, because it can be changed into a prime (28280717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62762 + ... + 63210.

It is an arithmetic number, because the mean of its divisors is an integer number (1660500).

Almost surely, 2^28280714 is an apocalyptic number.

28280714 is a deficient number, since it is larger than the sum of its proper divisors (24855286).

28280714 is a wasteful number, since it uses less digits than its factorization.

28280714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 28280714 is about 5317.9614515338. The cubic root of 28280714 is about 304.6703021579.

Adding to 28280714 its reverse (41708282), we get a palindrome (69988996).

The spelling of 28280714 in words is "twenty-eight million, two hundred eighty thousand, seven hundred fourteen".