1220360 has 16 divisors (see below), whose sum is σ = 2745900. Its totient is φ = 488128.

The previous prime is 1220353. The next prime is 1220363. The reversal of 1220360 is 630221.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 232324 = 994^2 + 482^2 .

It is not an unprimeable number, because it can be changed into a prime (1220363) 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, 15215 + ... + 15294.

2^1220360 is an apocalyptic number.

1220360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220360 is an abundant number, since it is smaller than the sum of its proper divisors (1525540).

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

1220360 is a wasteful number, since it uses less digits than its factorization.

1220360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30520 (or 30516 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220360 is about 1104.6990540414. The cubic root of 1220360 is about 106.8634821098.

Adding to 1220360 its reverse (630221), we get a palindrome (1850581).

The spelling of 1220360 in words is "one million, two hundred twenty thousand, three hundred sixty".