1206220 has 24 divisors (see below), whose sum is σ = 2596608. Its totient is φ = 470400.

The previous prime is 1206209. The next prime is 1206223. The reversal of 1206220 is 226021.

It is a happy number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1206220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 85 + ... + 1555.

It is an arithmetic number, because the mean of its divisors is an integer number (108192).

2^1206220 is an apocalyptic number.

1206220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298304).

1206220 is an abundant number, since it is smaller than the sum of its proper divisors (1390388).

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

1206220 is a wasteful number, since it uses less digits than its factorization.

1206220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1206220 is about 1098.2804741959. The cubic root of 1206220 is about 106.4491443882.

The spelling of 1206220 in words is "one million, two hundred six thousand, two hundred twenty".