1220018 has 8 divisors (see below), whose sum is σ = 1836912. Its totient is φ = 607716.

The previous prime is 1219991. The next prime is 1220027. The reversal of 1220018 is 8100221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1219984 and 1220011.

It is an unprimeable number.

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, 380 + ... + 1607.

It is an arithmetic number, because the mean of its divisors is an integer number (229614).

2^1220018 is an apocalyptic number.

1220018 is a deficient number, since it is larger than the sum of its proper divisors (616894).

1220018 is a wasteful number, since it uses less digits than its factorization.

1220018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1220018 is about 1104.5442499058. The cubic root of 1220018 is about 106.8534985187.

Adding to 1220018 its reverse (8100221), we get a palindrome (9320239).

The spelling of 1220018 in words is "one million, two hundred twenty thousand, eighteen".