1002220 has 12 divisors (see below), whose sum is σ = 2104704. Its totient is φ = 400880.

The previous prime is 1002191. The next prime is 1002227. The reversal of 1002220 is 222001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1002227) 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, 25036 + ... + 25075.

It is an arithmetic number, because the mean of its divisors is an integer number (175392).

2^1002220 is an apocalyptic number.

1002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002220 is an abundant number, since it is smaller than the sum of its proper divisors (1102484).

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

1002220 is a wasteful number, since it uses less digits than its factorization.

1002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50120 (or 50118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1002220 is about 1001.1093846329. The cubic root of 1002220 is about 100.0739453074.

Adding to 1002220 its reverse (222001), we get a palindrome (1224221).

The spelling of 1002220 in words is "one million, two thousand, two hundred twenty".