1218208 has 12 divisors (see below), whose sum is σ = 2398410. Its totient is φ = 609088.

The previous prime is 1218199. The next prime is 1218209. The reversal of 1218208 is 8028121.

It can be written as a sum of positive squares in only one way, i.e., 976144 + 242064 = 988^2 + 492^2 .

It is not an unprimeable number, because it can be changed into a prime (1218209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19003 + ... + 19066.

2^1218208 is an apocalyptic number.

It is an amenable number.

1218208 is a deficient number, since it is larger than the sum of its proper divisors (1180202).

1218208 is an equidigital number, since it uses as much as digits as its factorization.

1218208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38079 (or 38071 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1218208 is about 1103.7246033318. The cubic root of 1218208 is about 106.8006302945.

The spelling of 1218208 in words is "one million, two hundred eighteen thousand, two hundred eight".