1218832 has 20 divisors (see below), whose sum is σ = 2500956. Its totient is φ = 573440.

The previous prime is 1218829. The next prime is 1218853. The reversal of 1218832 is 2388121.

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 266256 = 976^2 + 516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1218797 and 1218806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1969 + ... + 2512.

2^1218832 is an apocalyptic number.

It is an amenable number.

1218832 is an abundant number, since it is smaller than the sum of its proper divisors (1282124).

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

1218832 is a wasteful number, since it uses less digits than its factorization.

1218832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506 (or 4500 counting only the distinct ones).

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

The square root of 1218832 is about 1104.0072463530. The cubic root of 1218832 is about 106.8188625991.

The spelling of 1218832 in words is "one million, two hundred eighteen thousand, eight hundred thirty-two".