1220996 has 12 divisors (see below), whose sum is σ = 2442048. Its totient is φ = 523272.

The previous prime is 1220993. The next prime is 1221019. The reversal of 1220996 is 6990221.

1220996 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1220993) 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 3 ways as a sum of consecutive naturals, for example, 21776 + ... + 21831.

It is an arithmetic number, because the mean of its divisors is an integer number (203504).

2^1220996 is an apocalyptic number.

It is an amenable number.

1220996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220996 is a wasteful number, since it uses less digits than its factorization.

1220996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43618 (or 43616 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1220996 is about 1104.9868777501. The cubic root of 1220996 is about 106.8820431276.

Adding to 1220996 its sum of digits (29), we get a square (1221025 = 1105²).

The spelling of 1220996 in words is "one million, two hundred twenty thousand, nine hundred ninety-six".