28322617 has 8 divisors (see below), whose sum is σ = 29056320. Its totient is φ = 27596400.

The previous prime is 28322611. The next prime is 28322621. The reversal of 28322617 is 71622382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28322617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28322611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6234 + ... + 9772.

It is an arithmetic number, because the mean of its divisors is an integer number (3632040).

Almost surely, 2^28322617 is an apocalyptic number.

It is an amenable number.

28322617 is a deficient number, since it is larger than the sum of its proper divisors (733703).

28322617 is a wasteful number, since it uses less digits than its factorization.

28322617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743.

The product of its digits is 8064, while the sum is 31.

The square root of 28322617 is about 5321.8997547868. The cubic root of 28322617 is about 304.8207026454.

Adding to 28322617 its reverse (71622382), we get a palindrome (99944999).

The spelling of 28322617 in words is "twenty-eight million, three hundred twenty-two thousand, six hundred seventeen".