28342317 has 16 divisors (see below), whose sum is σ = 38629440. Its totient is φ = 18480000.

The previous prime is 28342313. The next prime is 28342343. The reversal of 28342317 is 71324382.

It is not a de Polignac number, because 28342317 - 2² = 28342313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28342313) 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, 26442 + ... + 27492.

It is an arithmetic number, because the mean of its divisors is an integer number (2414340).

Almost surely, 2^28342317 is an apocalyptic number.

It is an amenable number.

28342317 is a deficient number, since it is larger than the sum of its proper divisors (10287123).

28342317 is a wasteful number, since it uses less digits than its factorization.

28342317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244.

The product of its digits is 8064, while the sum is 30.

The square root of 28342317 is about 5323.7502758864. The cubic root of 28342317 is about 304.8913596768.

Adding to 28342317 its reverse (71324382), we get a palindrome (99666699).

It can be divided in two parts, 2834 and 2317, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 28342317 in words is "twenty-eight million, three hundred forty-two thousand, three hundred seventeen".