1223200 has 72 divisors (see below), whose sum is σ = 3281040. Its totient is φ = 441600.

The previous prime is 1223197. The next prime is 1223203. The reversal of 1223200 is 23221.

It is an interprime number because it is at equal distance from previous prime (1223197) and next prime (1223203).

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

It is not an unprimeable number, because it can be changed into a prime (1223203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8731 + ... + 8869.

It is an arithmetic number, because the mean of its divisors is an integer number (45570).

2^1223200 is an apocalyptic number.

1223200 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 1223200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1640520).

1223200 is an abundant number, since it is smaller than the sum of its proper divisors (2057840).

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

1223200 is a wasteful number, since it uses less digits than its factorization.

1223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 157 counting only the distinct ones).

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

The square root of 1223200 is about 1105.9837250159. The cubic root of 1223200 is about 106.9463148165.

Adding to 1223200 its reverse (23221), we get a palindrome (1246421).

The spelling of 1223200 in words is "one million, two hundred twenty-three thousand, two hundred".