309006 has 12 divisors (see below), whose sum is σ = 669552. Its totient is φ = 102996.

The previous prime is 308999. The next prime is 309007. The reversal of 309006 is 600903.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 17167 = 309006 / (3 + 0 + 9 + 0 + 0 + 6).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 309006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309007) by changing a digit.

309006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8566 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (55796).

2³⁰⁹⁰⁰⁶ is an apocalyptic number.

309006 is an abundant number, since it is smaller than the sum of its proper divisors (360546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

309006 is a wasteful number, since it uses less digits than its factorization.

309006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17175 (or 17172 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 309006 is about 555.8830812320. The cubic root of 309006 is about 67.6065805949.

Adding to 309006 its reverse (600903), we get a palindrome (909909).

The spelling of 309006 in words is "three hundred nine thousand, six".