1218472 has 16 divisors (see below), whose sum is σ = 2298240. Its totient is φ = 605616.

The previous prime is 1218467. The next prime is 1218473. The reversal of 1218472 is 2748121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1218473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^1218472 is an apocalyptic number.

It is an amenable number.

1218472 is a deficient number, since it is larger than the sum of its proper divisors (1079768).

1218472 is a wasteful number, since it uses less digits than its factorization.

1218472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 908 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 1218472 is about 1103.8441919039. The cubic root of 1218472 is about 106.8083447215.

The spelling of 1218472 in words is "one million, two hundred eighteen thousand, four hundred seventy-two".