166028317 has 24 divisors (see below), whose sum is σ = 210978432. Its totient is φ = 129477600.

The previous prime is 166028309. The next prime is 166028323. The reversal of 166028317 is 713820661.

166028317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166028317 - 2³ = 166028309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166028347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43392 + ... + 47062.

It is an arithmetic number, because the mean of its divisors is an integer number (8790768).

Almost surely, 2^166028317 is an apocalyptic number.

It is an amenable number.

166028317 is a deficient number, since it is larger than the sum of its proper divisors (44950115).

166028317 is a wasteful number, since it uses less digits than its factorization.

166028317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 166028317 is about 12885.1975925866. The cubic root of 166028317 is about 549.6177145138.

Adding to 166028317 its reverse (713820661), we get a palindrome (879848978).

The spelling of 166028317 in words is "one hundred sixty-six million, twenty-eight thousand, three hundred seventeen".