28318607 has 8 divisors (see below), whose sum is σ = 29861760. Its totient is φ = 26780760.

The previous prime is 28318603. The next prime is 28318627. The reversal of 28318607 is 70681382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28318607 - 2² = 28318603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318603) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 14732 + ... + 16542.

It is an arithmetic number, because the mean of its divisors is an integer number (3732720).

Almost surely, 2^28318607 is an apocalyptic number.

28318607 is a deficient number, since it is larger than the sum of its proper divisors (1543153).

28318607 is a wasteful number, since it uses less digits than its factorization.

28318607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28318607 is about 5321.5229962859. The cubic root of 28318607 is about 304.8063161604.

Adding to 28318607 its reverse (70681382), we get a palindrome (98999989).

The spelling of 28318607 in words is "twenty-eight million, three hundred eighteen thousand, six hundred seven".