1218308 has 24 divisors (see below), whose sum is σ = 2624832. Its totient is φ = 481824.

The previous prime is 1218307. The next prime is 1218313. The reversal of 1218308 is 8038121.

It is not an unprimeable number, because it can be changed into a prime (1218307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310 + ... + 2037.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2^1218308 is an apocalyptic number.

It is an amenable number.

1218308 is an abundant number, since it is smaller than the sum of its proper divisors (1406524).

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

1218308 is a wasteful number, since it uses less digits than its factorization.

1218308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371 (or 3369 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1218308 is about 1103.7699035578. The cubic root of 1218308 is about 106.8035525571.

The spelling of 1218308 in words is "one million, two hundred eighteen thousand, three hundred eight".