1230220 has 12 divisors (see below), whose sum is σ = 2583504. Its totient is φ = 492080.

The previous prime is 1230199. The next prime is 1230223. The reversal of 1230220 is 220321.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1230197 and 1230206.

It is not an unprimeable number, because it can be changed into a prime (1230223) 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, 30736 + ... + 30775.

It is an arithmetic number, because the mean of its divisors is an integer number (215292).

2^1230220 is an apocalyptic number.

1230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230220 is an abundant number, since it is smaller than the sum of its proper divisors (1353284).

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

1230220 is a wasteful number, since it uses less digits than its factorization.

1230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61520 (or 61518 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1230220 is about 1109.1528298661. The cubic root of 1230220 is about 107.1505145850.

Adding to 1230220 its reverse (220321), we get a palindrome (1450541).

The spelling of 1230220 in words is "one million, two hundred thirty thousand, two hundred twenty".