1072218 has 32 divisors (see below), whose sum is σ = 2505600. Its totient is φ = 305760.

The previous prime is 1072213. The next prime is 1072219. The reversal of 1072218 is 8122701.

It is a super-2 number, since 2×1072218² = 2299302879048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1072194 and 1072203.

It is not an unprimeable number, because it can be changed into a prime (1072213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1798 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (78300).

2^1072218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1072218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252800).

1072218 is an abundant number, since it is smaller than the sum of its proper divisors (1433382).

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

1072218 is an equidigital number, since it uses as much as digits as its factorization.

1072218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1072218 is about 1035.4795990265. The cubic root of 1072218 is about 102.3515360061.

Adding to 1072218 its reverse (8122701), we get a palindrome (9194919).

The spelling of 1072218 in words is "one million, seventy-two thousand, two hundred eighteen".