1218484 has 12 divisors (see below), whose sum is σ = 2190244. Its totient is φ = 592704.

The previous prime is 1218473. The next prime is 1218487. The reversal of 1218484 is 4848121.

1218484 = T₄₇ + T₄₈ + ... + T₁₉₄.

It can be written as a sum of positive squares in 2 ways, for example, as 685584 + 532900 = 828^2 + 730^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218487) 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 3 ways as a sum of consecutive naturals, for example, 3969 + ... + 4264.

2^1218484 is an apocalyptic number.

It is an amenable number.

1218484 is a deficient number, since it is larger than the sum of its proper divisors (971760).

1218484 is a wasteful number, since it uses less digits than its factorization.

1218484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8274 (or 8272 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 1218484 is about 1103.8496274403. The cubic root of 1218484 is about 106.8086953508.

It can be divided in two parts, 12 and 18484, that added together give a square (18496 = 136²).

The spelling of 1218484 in words is "one million, two hundred eighteen thousand, four hundred eighty-four".