28714005 has 24 divisors (see below), whose sum is σ = 51936768. Its totient is φ = 14647776.

The previous prime is 28714001. The next prime is 28714019. The reversal of 28714005 is 50041782.

It is not a de Polignac number, because 28714005 - 2² = 28714001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28714005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28714001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12837 + ... + 14906.

It is an arithmetic number, because the mean of its divisors is an integer number (2164032).

Almost surely, 2^28714005 is an apocalyptic number.

It is an amenable number.

28714005 is a deficient number, since it is larger than the sum of its proper divisors (23222763).

28714005 is a wasteful number, since it uses less digits than its factorization.

28714005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27777 (or 27774 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 28714005 is about 5358.5450450659. The cubic root of 28714005 is about 306.2183818531.

Adding to 28714005 its reverse (50041782), we get a palindrome (78755787).

The spelling of 28714005 in words is "twenty-eight million, seven hundred fourteen thousand, five".