28317677 has 4 divisors (see below), whose sum is σ = 28452096. Its totient is φ = 28183260.

The previous prime is 28317671. The next prime is 28317683. The reversal of 28317677 is 77671382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77671382 = 2 ⋅38835691.

It is an interprime number because it is at equal distance from previous prime (28317671) and next prime (28317683).

It is a cyclic number.

It is not a de Polignac number, because 28317677 - 2¹⁰ = 28316653 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 (28317671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66893 + ... + 67314.

It is an arithmetic number, because the mean of its divisors is an integer number (7113024).

Almost surely, 2^28317677 is an apocalyptic number.

It is an amenable number.

28317677 is a deficient number, since it is larger than the sum of its proper divisors (134419).

28317677 is a wasteful number, since it uses less digits than its factorization.

28317677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134418.

The product of its digits is 98784, while the sum is 41.

The square root of 28317677 is about 5321.4356145687. The cubic root of 28317677 is about 304.8029794500.

The spelling of 28317677 in words is "twenty-eight million, three hundred seventeen thousand, six hundred seventy-seven".