306918 has 36 divisors (see below), whose sum is σ = 718380. Its totient is φ = 94656.

The previous prime is 306913. The next prime is 306919. The reversal of 306918 is 819603.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

306918 is a modest number, since divided by 918 gives 306 as remainder.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 306891 and 306900.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 306918.

It is not an unprimeable number, because it can be changed into a prime (306913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5173 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (19955).

2³⁰⁶⁹¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359190).

306918 is an abundant number, since it is smaller than the sum of its proper divisors (411462).

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

306918 is a wasteful number, since it uses less digits than its factorization.

306918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 306918 is about 554.0018050512. The cubic root of 306918 is about 67.4539603745.

The spelling of 306918 in words is "three hundred six thousand, nine hundred eighteen".