28601717 has 4 divisors (see below), whose sum is σ = 28946400. Its totient is φ = 28257036.

The previous prime is 28601689. The next prime is 28601753. The reversal of 28601717 is 71710682.

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.

It is a cyclic number.

It is not a de Polignac number, because 28601717 - 2¹⁸ = 28339573 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 (28601767) 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, 172217 + ... + 172382.

It is an arithmetic number, because the mean of its divisors is an integer number (7236600).

Almost surely, 2^28601717 is an apocalyptic number.

It is an amenable number.

28601717 is a deficient number, since it is larger than the sum of its proper divisors (344683).

28601717 is an equidigital number, since it uses as much as digits as its factorization.

28601717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344682.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 28601717 is about 5348.0573108373. The cubic root of 28601717 is about 305.8186980468.

The spelling of 28601717 in words is "twenty-eight million, six hundred one thousand, seven hundred seventeen".