28354717 has 4 divisors (see below), whose sum is σ = 28467936. Its totient is φ = 28241500.

The previous prime is 28354693. The next prime is 28354723. The reversal of 28354717 is 71745382.

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: 71745382 = 2 ⋅35872691.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28354717 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 (28354747) 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, 56233 + ... + 56734.

It is an arithmetic number, because the mean of its divisors is an integer number (7116984).

Almost surely, 2^28354717 is an apocalyptic number.

It is an amenable number.

28354717 is a deficient number, since it is larger than the sum of its proper divisors (113219).

28354717 is a wasteful number, since it uses less digits than its factorization.

28354717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113218.

The product of its digits is 47040, while the sum is 37.

The square root of 28354717 is about 5324.9147411015. The cubic root of 28354717 is about 304.9358173645.

The spelling of 28354717 in words is "twenty-eight million, three hundred fifty-four thousand, seven hundred seventeen".