1122280 has 16 divisors (see below), whose sum is σ = 2525220. Its totient is φ = 448896.

The previous prime is 1122269. The next prime is 1122281. The reversal of 1122280 is 822211.

It can be written as a sum of positive squares in 2 ways, for example, as 1119364 + 2916 = 1058^2 + 54^2 .

It is not an unprimeable number, because it can be changed into a prime (1122281) 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 3 ways as a sum of consecutive naturals, for example, 13989 + ... + 14068.

2^1122280 is an apocalyptic number.

1122280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122280 is an abundant number, since it is smaller than the sum of its proper divisors (1402940).

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

1122280 is a wasteful number, since it uses less digits than its factorization.

1122280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28068 (or 28064 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1122280 is about 1059.3771755140. The cubic root of 1122280 is about 103.9203038352.

Adding to 1122280 its reverse (822211), we get a palindrome (1944491).

The spelling of 1122280 in words is "one million, one hundred twenty-two thousand, two hundred eighty".