1220266 has 8 divisors (see below), whose sum is σ = 1852704. Its totient is φ = 602700.

The previous prime is 1220257. The next prime is 1220309. The reversal of 1220266 is 6620221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1220266² = 2978098221512, which contains 22 as substring.

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, 3510 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (231588).

2^1220266 is an apocalyptic number.

1220266 is a deficient number, since it is larger than the sum of its proper divisors (632438).

1220266 is an equidigital number, since it uses as much as digits as its factorization.

1220266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7436.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1220266 is about 1104.6565076982. The cubic root of 1220266 is about 106.8607382677.

Adding to 1220266 its reverse (6620221), we get a palindrome (7840487).

The spelling of 1220266 in words is "one million, two hundred twenty thousand, two hundred sixty-six".