1220576 has 24 divisors (see below), whose sum is σ = 2746800. Its totient is φ = 523008.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220576 is 6750221.

It is a congruent number.

It is an unprimeable number.

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, 2501 + ... + 2948.

It is an arithmetic number, because the mean of its divisors is an integer number (114450).

2^1220576 is an apocalyptic number.

1220576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1220576 is an abundant number, since it is smaller than the sum of its proper divisors (1526224).

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

1220576 is an equidigital number, since it uses as much as digits as its factorization.

1220576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5466 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1220576 is about 1104.7968138984. The cubic root of 1220576 is about 106.8697865747.

Adding to 1220576 its reverse (6750221), we get a palindrome (7970797).

The spelling of 1220576 in words is "one million, two hundred twenty thousand, five hundred seventy-six".