1818428 has 12 divisors (see below), whose sum is σ = 3202920. Its totient is φ = 903312.

The previous prime is 1818419. The next prime is 1818431. The reversal of 1818428 is 8248181.

It is a junction number, because it is equal to n+sod(n) for n = 1818394 and 1818403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743 + ... + 2046.

It is an arithmetic number, because the mean of its divisors is an integer number (266910).

2^1818428 is an apocalyptic number.

It is an amenable number.

1818428 is a deficient number, since it is larger than the sum of its proper divisors (1384492).

1818428 is a wasteful number, since it uses less digits than its factorization.

1818428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956 (or 2954 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 1818428 is about 1348.4910084980. The cubic root of 1818428 is about 122.0577528231.

The spelling of 1818428 in words is "one million, eight hundred eighteen thousand, four hundred twenty-eight".