1318228 has 6 divisors (see below), whose sum is σ = 2306906. Its totient is φ = 659112.

The previous prime is 1318211. The next prime is 1318241. The reversal of 1318228 is 8228131.

It can be written as a sum of positive squares in only one way, i.e., 1317904 + 324 = 1148^2 + 18^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164775 + ... + 164782.

2^1318228 is an apocalyptic number.

It is an amenable number.

1318228 is a deficient number, since it is larger than the sum of its proper divisors (988678).

1318228 is a wasteful number, since it uses less digits than its factorization.

1318228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329561 (or 329559 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 1318228 is about 1148.1411063105. The cubic root of 1318228 is about 109.6470228189.

Subtracting 1318228 from its reverse (8228131), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1318228 in words is "one million, three hundred eighteen thousand, two hundred twenty-eight".